Photomicrographs
from Biology 3200 Laboratory Exercise 3
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Gram Stain | Endospore Stain | Acid Fast Stain |
Bacillus thuringiensis | B. thuringiensis - Brightfield | Mycobacterium smegmatis |
Escherichia coli | B. thuringiensis - Phase contrast | Escherichia coli |
Serratia marcescens | ||
Staphylococcus epidermidis | PHB Stain | Modified Gin Stain |
B. thuringiensis - Brightfield | B. thuringiensis | |
B. thuringiensis - Phase contrast | Escherichia coli |
Title: Gram stain of Escherichia coli cells |
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Description: Cells were cultivated Trypticase Soy broth for 24 h at 37C. A heat fixed smear was stained with crystal violet and Gram's iodine, decolorized and counterstained with safranin. The slide was observed under brightfield microscopy with a 100 X oil immersion objective. Material preparation by: Sam Stevenson/Nicole Stady |
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