Gram stain
From IDWiki
Revision as of 13:58, 11 August 2019 by Maintenance script (talk | contribs) (Imported from text file)
Gram stain
Procedure
- Fix to slide with heat
- Crystal violet, and wait 60 seconds
- Wash with water then flood with iodine, and wait 60 seconds
- Wash with water then decolorize with 95% alcohol
- Counter-stain with safrinin, wait 30 seconds then wash off with water
Interpretation
- Gram-positive = blue
- Gram-negative = red
- Peptidoglycan layer (cell wall) is thick with extensive cross-linking in gram-positive
