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- Description:Difco™ Antimicrobic Vial P Polymyxin B
- Size:10 mL
- Environmentally Preferable:
- Cat. No.:90002-620
- Supplier no.:232681
Antimicrobic Vial P Polymyxin B is added to media to improve their selectivity in isolating microorganisms.
- Primarily used for resistant gram-negative infections
- Bactericidal for gram-negative; no impact on gram-positive microbes
Polymyxin B is composed of a number of related compounds. It has a bactericidal action against almost all gram-negative bacilli except the Proteus and Neisseria genera. Polymyxins bind to the cell membrane and alter its structure, making it more permeable. The resulting water uptake leads to cell death.