ANTIBIOTICS Defination ÷ Antibiotics are the chemical substance derived from metabolically produced by living organism which are capable of inhibiting a small life process of other microorganism in small concentration. NOMENCLATURE OF ANTIBIOTICS: - Previously known antibiotics where named on very subjective basis a) Some antibiotic where named from microbs from which they are derived . • E.g : Sterptomycin as it is obtained from streptomycesgriseus • B) Some are named after their laborotary • E.g : Nystatin as it is produced in New York state board of health laboratory • C) some were named after secretary • E.g..Nacimycin as the name of secretary was Nancy . • D) some were named after movies • E.g. Rifonycin derived from the movie Riffi E) Some are named after patient • E.g. Bacitracin because the name o...