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Definition
| media that only allows certain species to grow and inhibits others, such as EMB agar which has chemical dyes that inhibit the growth of Gram-positive bacteria. |
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Definition
| Media that has a diagnostic test built in that changes colors with different species of microbes Such as lactose broth that will turn from red to yellow for species that can ferment lactose. |
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Term
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Definition
| a media used to keep microbes alive but prevent them from overgrowing while transporting them from one place to another. |
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Definition
| The standard field of viewing, background is bright while dense specimens appear as darker objects. Works best for stained material. |
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Definition
| creates negative image, field of view is dark while cells and other objects are lit up. Useful for identifying and observing motile specimens and those that are hard to stain. |
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Term
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Definition
| increases the contrast between cells or different portions of the cell that vary only slightly in density. Exxagerates small differences in density to make specimen clearer. Must have special condensor and objective lens. |
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