Grows on you

Negative Stain-Bacterium 
Negatively Stained Bacterium

This bacterium was prepared by "negative staining", where a liquid heavy metal salt is put onto the bacteria which have been placed on a grid that goes into the transmission electron microscope. Thinner parts of the bacterium repel the stain and so appear light with black around them. The main part of the bacterium is black because it is too thick for electrons to go through. This bacterium has multiple pili (the tiny spikes bristling out around it) and a few flagella (look like spaghetti), which rotate to propel the bacterium. Some bacteria have fewer flagella, a single flagellum, or none at all.

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Copyright © 1996-2000 Tina (Weatherby) Carvalho...MicroAngela
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