MCE Penicillin-Streptomycin-Neomycin (PSN) (100×), Sterile is used to prevent bacterial contamination of cell culture due to their effective combined
action against gram-positive and gram-negative bacteria, which contains 5,000 units/mL of penicillin, 5 mg/mL of streptomycin, and 10 mg/mL of Neomycin.