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| A differential stain used to identify acid-fast organisms such as members of the genus Mycobacterium. Acid fastness is a physical property that gives a bacterium the ability to resist decolorization by acids during staining procedures. |
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| A dye containing acidic group(s) and is used in staining biological specimen. |
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| Freedom from infection, sterile. |
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Used for the examination of vitamins, amino acids, and antibiotics.
Consists primarily of liquid or solid biological materials intended for medical purposes. Tests microorganisms in order to measure the concentration in a patient's serum of certain substances, such as amino acids. |
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| A dye that ionize in solution giving a positively-charged ions and is used to produce a brilliant color during staining of biological specimen. |
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| Measuring the amount or activity of a particular enzyme or protein in a sample of blood or urine or other tissue from the body. |
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| A liquid medium containing a variety of nutrients which is used to grow cultures of bacteria and other microorganisms. |
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| A growth medium suitable for the in vitro cell culture of human or animal cells in which all of the chemical components are known. |
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| The part of the molecule where the absorption proceeds and where the main change of the geometry or electron density, etc. |
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| A visible mass of microorganisms all originating from a single mother cell. |
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| Composed of organic materials that are not chemically pure and not specifically identified chemical components. Examples include Nutrient Broth/Agar, Tryptic Soy Broth/Agar, and Blood agar. |
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| Consists of two optical parts, namely the objective lens and the ocular lens. |
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| The lens mounted before the microscope stage, which transmits light to the object. There are two main categories of condensers: (1) bright field and (2) dark field. |
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| The non-intended or accidental introduction of infectious material like bacteria, yeast, mold, fungi, virus, prions, protozoa or their toxins and by-roducts. |
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| A culture in which bacteria from a foreign source have infiltrated the growth medium. |
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| A method of multiplying microbial organisms by letting them reproduce in predetermined culture medium under controlled laboratory conditions. |
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DIFFERENTIAL INTERFERENCE CONTRAST
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| An optical microscopy technique used to enhance the contrast in unstained, transparent samples. |
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| SCANNING ELECTRON MICROSCOPE |
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TRANSMISSION ELECTRON MICROSCOPE
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