A Gram Stain of a Mixture of Gram-Positive and Gram-Negative Bacteria.

Note Gram-negative (pink) bacilli and Gram-positive (purple) cocci.

Photomicrograph of a Gram Stain of Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli.jpg by Gary E. Kaiser, Ph.D.
Professor of Microbiology, The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at https://cwoer.ccbcmd.edu/science/microbiology/index_gos.html.

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Last updated: Feb., 2021
Please send comments and inquiries to Dr. Gary Kaiser