title: The effect of histone on the inducible beta-galactosidase in Escherichia coli.
mesh_terms: D002118:Calcium / Q000494:pharmacology; D004790:Enzyme Induction / Q000187:drug effects*; D004926:Escherichia coli / Q000201:enzymology*; D005696:Galactosidases / Q000096:biosynthesis*; D006657:Histones / Q000494:pharmacology*; D008274:Magnesium / Q000494:pharmacology; D013096:Spermine / Q000494:pharmacology
chemical_list: D006657:Histones; D013096:Spermine; D005696:Galactosidases; D008274:Magnesium; D002118:Calcium