title: ppearance of a protein "agglutinin" on the spheroplast membrane of pneumococci during induction of competence.
abstract: Competent pneumococci and their spheroplasts agglutinate in dilute acid. Agglutination is caused by a trypsin-sensitive agglutinin which is not identical to the competence factor and the appearance of which requires protein synthesis.
mesh_terms: D000372:Agglutination Tests; D000941:Antigens; D002462:Cell Membrane / Q000276:immunology*; D003470:Culture Media; D006851:Hydrochloric Acid; D006863:Hydrogen-Ion Concentration; D008858:Microscopy, Phase-Contrast; D011523:Protoplasts / Q000276:immunology*; D013296:Streptococcus pneumoniae / Q000254:growth & development / Q000276:immunology*; D014170:Transformation, Genetic; D014357:Trypsin / Q000494:pharmacology
chemical_list: D000941:Antigens; D003470:Culture Media; D014357:Trypsin; D006851:Hydrochloric Acid