Antimicrobial Drugs 。Chemotherapy The use of drugs to treat a disease 。Antimicrobial drugs Interfere with the growth of microbes within a host 。Antibiotic Substance produced by a microbe that,in small amounts, inhibits another microbe 。Selective toxicity A drug that kills harmful microbes without damaging the hostAntimicrobial Drugs • Chemotherapy The use of drugs to treat a disease • Antimicrobial drugs Interfere with the growth of microbes within a host • Antibiotic Substance produced by a microbe that, in small amounts, inhibits another microbe • Selective toxicity A drug that kills harmful microbes without damaging the host