Term
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Definition
| (hypersensivity) an acquired, abnormal immune response to a substance (allergies) that does not normally cause a reaction |
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Definition
| mutual opposition or contrary action. The inhibition of one microorganism by another |
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Term
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Definition
| glycoprotein substance developed by the body in response to, and interacting specifically with, antigen. Also known as immunoglobulin |
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Definition
| a foreign substance that stimulates the formation of antibodies that react specifically with it |
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Definition
| the prevention or inhibiting of the growth of causative microorganisms |
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Definition
| dilution or weakening of virulence of a microorganism, reducing or abolishing pathogenicity |
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Definition
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Definition
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Definition
| the presence of bacteria in the blood |
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Definition
| a prokaryotic one celled microorganism of the Kingdom Monera; existing as free living organisms or as parasites, multiplying by binary fusion and having a large range of biochemical properties |
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Definition
| a visible group of bacteria growing on a solid medium, presumably arising from a single microorganism |
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Definition
| an agent taht destroys bacteria but not necessarily their spores |
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Definition
| science that studies bacteria |
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Term
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Definition
| a method of asexual reproduction involoving halving of the nucleus and cytoplasm of the cell followed by the development of each half into a new individual |
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Definition
| an arthropod vector in which the disease causing organism multiplies or develops within the arthropod prior to becoming infective for a susceptible individual |
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Definition
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Definition
| the membrane that surrounds some bacterial cells; a loose gel-like structure that, in pathogenic bacteria, helps to protect against phogacytosis |
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Term
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Definition
| a large group of nonmotile, gram negative intracellular parasites |
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Term
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Definition
| the type of bacteria that is spherical or ovoid in form |
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Term
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Definition
| the symbolic relationship of two organisms of different species in which one gains some benefit such as protection or nourishment and the other is not harmed or benefited |
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Term
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Definition
| a disease that may be transmitted directly or indirectly from one individual to another |
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Term
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Definition
| the act of introducing disease germs or infectious material into an area or substance |
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Term
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Definition
| a double bacillus, two being linked end to end; Morax-Axenfeld bacillus a cause of conjunctivitis is typical of this form |
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Term
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Definition
| a genus of bacteria that occur in pairs |
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Term
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Definition
| a chemical or physical agent that kills disease causing micoorganisms by chemical or physical means |
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Term
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Definition
| resistant, as in bacteria, to the action of drug or drugs |
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Term
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Definition
| disease that occurs continously in a particular region, but has how mortality |
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Term
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Definition
| produced or arising from within a cell or organism |
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Term
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Definition
| a thick-walled spore within a bacterium |
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Term
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Definition
| bacterial toxin confined within the cell wall of bacterium freed only when the bacterium is broken down, found only in gram negative bacteria |
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Term
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Definition
| appearance of an infectious disease or condition tha attacks many people at the same time in the same geographical area |
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Term
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Definition
| originating outside an organ or part |
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Term
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Definition
| a toxin produced by a microorganism and excreted into its surrounding medium` |
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Term
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Definition
| a microorganism that perfers an enviroment devoid of oxygen but has adapted so that it can live and grow in the presence of oxygen |
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Term
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Definition
| an organism that prefers an oxygen enviroment but is capable of living and growing in its absence |
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Term
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Definition
| prefers live organic matter as a source of nutrition but can adapt to the use of dead organic matter under certain conditions |
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Term
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Definition
| one in which the organisms are originally confined to one area but enter the blood or lymph vessel and spread to other parts of the body |
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Term
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Definition
| any inanimate object to which infectious material adheres and can be transmitted |
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Definition
| a substance that kills fungi |
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Term
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Definition
| a group of diverse and widespread unicellular and multicellular organisms, lacking chlorophyll, usually bearing spores and often filamentous |
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Definition
| an infection that becomes systemic |
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Definition
| a substance that destroys microorganisms |
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Definition
| (other than self nourishing) organisms that must obtain their nourishment from complex organic matter |
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Definition
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Term
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Definition
| (bleaches) chlorine containing compounds |
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Term
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Definition
| synonymous with "normal flora" indicates the microbial population that lives with the host in a healthy condition |
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Term
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Definition
| the entry, establishment and multiplication of pathogenic organisms within a host |
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Definition
| a substance that kills insects |
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Term
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Definition
| a compound consisting of iodine combined with a carrier, such as polyvinylprryolidone, often used a preoperative skin disinfectant |
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Term
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Definition
| a substance that kills insect larva |
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Term
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Definition
| infection caused by germs lodging and multiplying at one point in a tissue and remaining there |
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Term
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Definition
| temperature above which bacterial growth will not take place |
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Term
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Definition
| a living organism capable of transmitting infection by carrying the disease agent on its external body parts or surfaces |
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Term
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Definition
| bacteria that prefer moderate temperature and develope best at temperatures between 25C and 40C |
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Term
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Definition
| a microorganism that requires very little free oxygen |
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Term
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Definition
| scientific study of microorganisms and their effect on other loving organisms |
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Term
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Definition
| temperature below which bacterial growth will not take place |
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Term
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Definition
| infection caused by two or more organisms |
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Term
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Definition
| a relationship in which organisms of two different species live in close association to the mutal benefit of each |
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Term
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Definition
| the branch of science concerned with the study of fungi |
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Term
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Definition
| bacteria of the Mycoplasma genus that are found in humans and have no cell wall; the smallest free-living organisms presently known being intermediate in size between virsuses and bacteria |
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Term
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Definition
| organisms that are free living and relationships are not required for survival |
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Term
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Definition
| an organism that exists as part fo the normal flora but may become pathogenic under certain conditions |
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Term
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Definition
| temperature at which organisms grow best |
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Term
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Definition
| pressure that developes when two solutions of different concentrations are seperated by a semipermable membrane |
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Term
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Definition
| a disease affecting the majority of the population of a large region or one that is epidemic at the same time in many different parts of the world |
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Term
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Definition
| an interactive relationship between two organisms in which one is harmed and the other benefits |
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Term
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Definition
| the state of producing or being able to produce pathological changes and disease |
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Term
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Definition
| the "first" infection that a host has after a period of health |
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Term
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Definition
| small proteinaceous infectious agents (particles) which almost certainly do not have a nucleic acid genome and therefore resist inactivation by procedures that modify nucleic acids |
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Term
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Definition
| one celled organisms of the Kingdom Protisa--most are unicellular although some are colonist |
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Definition
| science that deals with the study of protozoa |
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Term
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Definition
| bacteria that prefer cold, thriving at temperatures between 0 C and 25 C |
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Term
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Definition
| a genus of gram-negative, pathogenic, intracellular parasitic bacteria |
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Term
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Definition
| area of science that studies Rickettsia |
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Term
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Definition
| a cube-like packet of eight spherical bacteria (sarcina is Latina for bundle) |
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Term
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Definition
| infection caused by a different organism than the one causing the primary infection |
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Term
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Definition
| condition characterized by the multiplication of bacteria in blood |
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Term
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Definition
| a genus of spiral bacteria having a corkscrew shape with a rigid cell wall and hair-like projections called flagella that assist in movement |
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Term
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Definition
| a genus of bacteria having flexible cell wall but no flagella in the traditional sense. Movement in these organisms occurs by contractions (undulating) of long filaments (endoflagella) that run the length of the cell |
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Term
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Definition
| a disease which occurs occasionally or in scattered instances |
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Term
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Definition
| a genus of gram-positive, nonmotile, opportunistic bacteria which tend t aggregate in irregular, grape-like clusters |
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Term
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Definition
| a process of completely removing or destroying all life forms and/or their products on or in substance |
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Term
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Definition
| rod-shaped bacteria occuring in chains |
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Term
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Definition
| spherical shaped bacteria occuring in chains |
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Term
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Definition
| a microbe that can only live in the presence of free oxygen |
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Term
| strict (obligate) anaerobe |
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Definition
| a microbe that can only be survive in the absence of free oxygen |
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Term
| strict (obligate) parasite |
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Definition
| an organism that is completely dependent on its living host for survival |
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Term
| strict (obligate) saprophyte |
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Definition
| an organism that can only survive on dead or decaying organic matter |
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Term
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Definition
| organisms live in close nutritional relationships; required by one or both members |
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Term
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Definition
| the harmonious action of two or more micoorgansims producing on a effect that neither could produce alone |
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Term
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Definition
| grouping of four spherical shaped cells |
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Term
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Definition
| bacteria that thrive best at high temperatures, between 40 C and 70 C |
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Term
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Definition
| the presence of toxins in the blood |
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Term
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Definition
| a poisonous sustance of plant, animal, bacterial or fungi origin |
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Term
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Definition
| an organism that due to its own virulence is able to produce disease |
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Term
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Definition
| (L. to move rapidly, vibrate) a genus of spiral bacteria which are curved or bent rods that resemble commas |
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Term
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Definition
| an agent destructive to viruses |
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Term
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Definition
| the study of viruses and viral diseases |
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Term
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Definition
| relative power of an organism to produce disease |
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Term
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Definition
| one of a group of minute infectious agents, with certain exceptions not resolved in the light microscope, and characterized by a lack of independent metabolism and by the ability to replicate only within living host cells. Like living organims, they are able to reproduce with genetic continuity and the possibility of mutation |
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