title: The effect of freezing and DEAE-D in spheroplast assays.
mesh_terms: D000538:Aluminum Silicates; D003090:Coliphages; D003911:Dextrans / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects; D005021:Ethylamines / Q000494:pharmacology; D005615:Freezing; D011523:Protoplasts / Q000187:drug effects; D012367:RNA, Viral / Q000494:pharmacology*
chemical_list: D000538:Aluminum Silicates; D003911:Dextrans; D005021:Ethylamines; D012367:RNA, Viral