Gibco® Antibiotic-Antimycotic is used to prevent bacterial and fungal contamination. This solution contains 10,000 units/mL of penicillin, 10,000 µg/mL of streptomycin, and 25 µg/mL of Fungizone® Antimycotic. The antibiotics penicillin and streptomycin prevent bacterial contamination of cell cultures due to their effective combined action against gram-positive and gram-negative bacteria. Fungizone® (amphotericin B) prevents fungal contamination of cell cultures due to its inhibition of multi-cellular fungus and yeast