{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T13:06:00Z","timestamp":1777899960583,"version":"3.51.4"},"reference-count":0,"publisher":"S. Karger AG","license":[{"start":{"date-parts":[[2009,7,24]],"date-time":"2009-07-24T00:00:00Z","timestamp":1248393600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"},{"start":{"date-parts":[[2009,7,24]],"date-time":"2009-07-24T00:00:00Z","timestamp":1248393600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/karger.com\/pages\/terms-and-conditions"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int Arch Allergy Appl Imm"],"abstract":"<jats:p>Antigen PDE&lt;sub&gt;1&lt;\/sub&gt; was purified from pigeon dropping extracts by chromatography on DEAE-cellulose and Bio-Gel A-1.5. It was characterized as a glycoprotein, containing 88% protein and 12% carbohydrate, with a molecular weight of approximately 200,000. PDE&lt;sub&gt;1&lt;\/sub&gt; appears to be derived from pigeon intestinal IgA, showing the typical immunoglobulin structure of heavy and light chains. This antigen represents about 24% of the dry weight of the unfractionated pigeon dropping extract.<\/jats:p>","DOI":"10.1159\/000231876","type":"journal-article","created":{"date-parts":[[2009,7,28]],"date-time":"2009-07-28T02:24:43Z","timestamp":1248747883000},"page":"553-559","source":"Crossref","is-referenced-by-count":14,"title":["The Antigens of Pigeon Breeder\u2019s Disease"],"prefix":"10.1159","author":[{"given":"Thomas H.","family":"Tebo","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Walter W.","family":"Fredricks","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ronald C.","family":"Roberts","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2009,7,24]]},"container-title":["International Archives of Allergy and Applied Immunology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/231876","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/karger.com\/article-pdf\/doi\/10.1159\/000231876","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T10:19:25Z","timestamp":1777630765000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000231876"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,7,24]]},"references-count":0,"URL":"https:\/\/doi.org\/10.1159\/000231876","archive":["Portico"],"relation":{},"ISSN":["0020-5915","2571-6662"],"issn-type":[{"value":"0020-5915","type":"print"},{"value":"2571-6662","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,7,24]]}}}