title: R-factor elimination by thymine starvation.
mesh_terms: D000667:Ampicillin; D002452:Cell Count; D002470:Cell Survival; D002701:Chloramphenicol; D003470:Culture Media; D004926:Escherichia coli / Q000378:metabolism; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D007709:Klebsiella / Q000378:metabolism; D010403:Penicillin Resistance; D013307:Streptomycin; D013449:Sulfonamides; D013752:Tetracycline; D013941:Thymine / Q000378:metabolism*
chemical_list: D003470:Culture Media; D013449:Sulfonamides; D002701:Chloramphenicol; D000667:Ampicillin; D013752:Tetracycline; D013941:Thymine; D013307:Streptomycin