Description:
The Gram stain is the differential
stain most used for direct microscopic examination of specimens and bacterial
colonies because it has a broad-spectrum. This method was developed empirically
by the Danish bacteriologist Christian Gram in 1884. This article discusses the
gram stain, including its development, uses, and variations
Learning Objectives:
- Outline Gram's method
- Discuss variation in gram reactions
- Identify gram stain modifications, recommended reagents,
timing, and uses
Author(s):
Ricarte A. Gallarte, RM, MT
Launched: 2002