{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,25]],"date-time":"2025-09-25T18:14:45Z","timestamp":1758824085571},"reference-count":0,"publisher":"Rockefeller University Press","issue":"4","content-domain":{"domain":["rupress.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[1949,4,1]]},"abstract":"<jats:p>The isolation and characterization of a type-specific M protein from pneumococcus are described. This protein is similar chemically in all respects studied to the M proteins of group A streptococci. No immunological crossreactions have been observed, however, between M proteins of the two species.<\/jats:p>\n               <jats:p>Strains of capsular type I pneumococcus have been encountered which contain different M proteins. The same is true for capsular type II pneumococcus. It is apparent, therefore, that the capsular polysaccharides and M proteins can vary independently of each other.<\/jats:p>","DOI":"10.1084\/jem.89.4.439","type":"journal-article","created":{"date-parts":[[2004,6,22]],"date-time":"2004-06-22T18:35:50Z","timestamp":1087929350000},"page":"439-450","update-policy":"http:\/\/dx.doi.org\/10.1084\/jem.crossmarkpolicy","source":"Crossref","is-referenced-by-count":31,"title":["A TYPE-SPECIFIC PROTEIN FROM PNEUMOCOCCUS"],"prefix":"10.1084","volume":"89","author":[{"given":"Robert","family":"Austrian","sequence":"first","affiliation":[{"name":"From the Department of Microbiology, New York University College of Medicine, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Colin M.","family":"MacLeod","sequence":"additional","affiliation":[{"name":"From the Department of Microbiology, New York University College of Medicine, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"291","published-online":{"date-parts":[[1949,4,1]]},"container-title":["Journal of Experimental Medicine"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/rupress.org\/jem\/article-pdf\/89\/4\/439\/1184050\/439.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"http:\/\/rupress.org\/jem\/article-pdf\/89\/4\/439\/1184050\/439.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,10,3]],"date-time":"2020-10-03T13:56:53Z","timestamp":1601733413000},"score":1,"resource":{"primary":{"URL":"https:\/\/rupress.org\/jem\/article\/89\/4\/439\/5225\/A-TYPESPECIFIC-PROTEIN-FROM-PNEUMOCOCCUS"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1949,4,1]]},"references-count":0,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1949,4,1]]}},"URL":"https:\/\/doi.org\/10.1084\/jem.89.4.439","relation":{},"ISSN":["1540-9538","0022-1007"],"issn-type":[{"value":"1540-9538","type":"electronic"},{"value":"0022-1007","type":"print"}],"subject":[],"published":{"date-parts":[[1949,4,1]]}}}