title: Observations on the purification of polyoma virus: effect of chymotrypsin.
mesh_terms: D000327:Adsorption; D002918:Chymotrypsin / Q000494:pharmacology*; D046508:Culture Techniques; D004279:DNA, Viral / Q000032:analysis; D006387:Hemagglutination, Viral; D010455:Peptides / Q000032:analysis; D011120:Polyomavirus / Q000032:analysis / Q000254:growth & development / Q000302:isolation & purification*; D014764:Viral Proteins / Q000032:analysis
chemical_list: D004279:DNA, Viral; D010455:Peptides; D014764:Viral Proteins; D002918:Chymotrypsin