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Both selective immunoglobulin A and opsonin deficiencies are relatively common in the general population and may be a cause of susceptibility to persistent cryptosporidial infection.<\/jats:p>","DOI":"10.1136\/gut.31.6.714","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T17:41:31Z","timestamp":1190137291000},"page":"714-716","source":"Crossref","is-referenced-by-count":25,"title":["Protracted enteric cryptosporidial infection in selective immunoglobulin A and saccharomyces opsonin deficiencies."],"prefix":"10.1136","volume":"31","author":[{"given":"M R","family":"Jacyna","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J","family":"Parkin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R","family":"Goldin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J H","family":"Baron","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[1990,6,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"967","DOI":"10.1128\/JCM.25.6.967-975.1987","article-title":"Cryptosporidium Species, a protean protozoan","volume":"25","author":"Janoff, E.N.; Reller, L.B.","year":"1987","unstructured":"Janoff EN, Reller LB. 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