Sierra College
Biological Sciences'
Microscopic Slide Collection and Associated Images
Gram stain
Photomicrograph of a Gram stain showing Gram positive cocci (blue/purple) and Gram negative rods (red). Magnification: 1000x.
A photomicrograph of a Gram stain preparation showing two types of bacteria magnified 1000x. In this preparation, the Gram positive cocci, Staphylococcus aureus, appear as dark purple sphears and the Gram negative bacilli, Serratia marcescens, appear as pink or red-colored rods.
Copyright 2014 Sierra College Biological Sciences Department
Last updated: October 15, 2014
