Concept
Version 10
Created by Boundless
Types of Microorganisms
![Gram Stain](../../../../../../../../../figures.boundless-cdn.com/10161/full/gram-stain-01.jpeg)
Gram Stain
This is a microscopic image of a Gram stain of mixed Gram-positive cocci (Staphylococcus aureus, purple) and Gram-negative bacilli (Escherichia coli, red).
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