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leminhkhai leminhkhai
wrote...
Posts: 19
9 years ago Edited: 9 years ago, bio_man
The culture may be getting too old. When bacteria die their cell walls degrade and some may not retain the primary stain. The bacteria that haven't completely degraded may retain the primary stain. Therefore you would get red and purple cocci. Gram stains should be done in less than 24 hours of culture.

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wrote...
Educator
9 years ago
Sorry, what's the question?
leminhkhai Author
wrote...
9 years ago
Suppose you are viewing a sample from a PURE culture and
observe both red and purple cocci. What are the possible
problems that would cause such an inconclusive result?
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