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Unformatted text preview: positive. All Gram-positive cells are purple in color when stained. This week is different then the simple staining lab we did previously because we stained with multiple dyes so it could have came out red or purple rather then automatically purple. Clusters of purple circles appeared all over the slide which revealed Gram-positive. I also stained Bacillis Subtilis which turned purple resulting in Gram-positive. The specimen produced purple rod shaped chains with spores central to each cell. Because it is Gram-positive it has a tough outer later and is able to survive extreme climates. We also looked at a mixed culture of Escherichia coli and Bacillis Subtilis. Which resulted in both pink/red and purple on the same slide since E. coli is Gram-negative and B. subtilis is Gram-positive....
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- Fall '10