A gram stain showing both gram positive cocci (staphylococci) and gram negative bacilli (E. coli). This file is taken from wikimedia commons and is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Gram Negative Bacteria
Gram Staining Gram staining is a method of staining used to classify bacteria into two main categories; gram-positive and gram-negative. It was developed by the Danish scientist Hans Christian Gram in…
