Stains

... but not always truthful. Some organisms, Acinetobacter in particular, can readily stain gram-positive in fresh clinical material, yet stains gram-negative after growth on plated media.

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... a medical cell biologist, for example. A simple blood test is required, and the lymphocytes are stained and analysed visually. An X and Y specific stains / probes indicate whether there is an extra set of chromosomes or other such "apparent" anomalities in the genome. This does not reveal ...

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1/There are many different stains, that have more or less specificity, w/r to what they are reacting with, but basically, the idea is to increase contrast between stained and non stained structure. Some stains are called vital and do not ...

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... structures are colourless and can't be distinguished b)staining improves the resolving power of microscope c)cells are always killed by stains and this stops any moverment d)additon of heavy metals such as lead essential for visualization 2.In a small lump of soil, a fragment of organic ...

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How do you "know" that is is not S. aureus? Your findings strongly suggest S. aureus (some stains do have whitish color).

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