title: Ribosomes from Escherichia coli merodiplods heterozygous for resistance to streptomycin and to spectinomycin.
mesh_terms: D000483:Alleles; D000903:Antibiotics, Antineoplastic; D004171:Diploidy; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000166:cytology*; D005796:Genes; D006579:Heterozygote; D009154:Mutation; D012270:Ribosomes; D000198:Spectinomycin; D013307:Streptomycin
chemical_list: D000903:Antibiotics, Antineoplastic; D000198:Spectinomycin; D013307:Streptomycin