OverviewThe gram stain procedure is a method of staining microorganisms on a slide using crystal violet to be viewed later under a microscope.
Review Date 10/4/2016
Updated by: John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.