What is the purpose of iodine in the gram staining process? Explain.

Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter7: Basic Clinical Microbiology
Section7.7: Bacterial Identification And Antibiotic Susceptibility Testing
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What is the purpose of iodine in the gram staining process? Explain.

 
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Gram stains are used to distinguish between bacteria with and without cell walls. When the gramme stain process is finished, Gram-positive bacteria will stain purple and Gram-negative bacteria will stain pink. This staining procedure includes the use of iodine.

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