{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T09:15:37Z","timestamp":1762161337706},"reference-count":17,"publisher":"Elsevier BV","issue":"11","license":[{"start":{"date-parts":[[1974,11,1]],"date-time":"1974-11-01T00:00:00Z","timestamp":152496000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["The American Journal of Clinical Nutrition"],"published-print":{"date-parts":[[1974,11]]},"DOI":"10.1093\/ajcn\/27.11.1247","type":"journal-article","created":{"date-parts":[[2018,1,22]],"date-time":"2018-01-22T08:56:32Z","timestamp":1516611392000},"page":"1247-1253","update-policy":"http:\/\/dx.doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":34,"title":["Biopterin content of human and rat fluids and tissues determined protozoologically"],"prefix":"10.1016","volume":"27","author":[{"given":"Herman","family":"Baker","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oscar","family":"Frank","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cyrus J.","family":"Bacchi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seymour H.","family":"Hutner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1093\/ajcn\/27.11.1247_bib1","doi-asserted-by":"crossref","first-page":"1061","DOI":"10.1002\/anie.197210611","article-title":"Biochemistry of the pteridines.","volume":"11","author":"REMBOLD","year":"1972","journal-title":"Angew. Chem."},{"key":"10.1093\/ajcn\/27.11.1247_bib2","first-page":"618","article-title":"Assay of unconjugated pteridines.","volume":"18B","author":"DEWEY","year":"1972"},{"key":"10.1093\/ajcn\/27.11.1247_bib3","series-title":"Analytical Microbiology","first-page":"457","article-title":"Assays for unconjugated pteridines (Crithidia factor), alone or unconjugated, and conjugated pteridines.","author":"GUTTMAN","year":"1972"},{"key":"10.1093\/ajcn\/27.11.1247_bib4","series-title":"Clinical Vitaminology: Methods and Interpretation.","author":"BAKER","year":"1968"},{"key":"10.1093\/ajcn\/27.11.1247_bib5","first-page":"120","article-title":"A new synthesis of biopterin and L-neopterin.","volume":"11","author":"ANDREWS","year":"1968","journal-title":"Chem. Commun."},{"key":"10.1093\/ajcn\/27.11.1247_bib6","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/0014-4800(71)90098-0","article-title":"Vitamin deficits in severe fatty liver of man calculated from multiple reference units.","volume":"15","author":"FRANK","year":"1971","journal-title":"Exptl. Mol. Pathol."},{"key":"10.1093\/ajcn\/27.11.1247_bib7","doi-asserted-by":"crossref","first-page":"613","DOI":"10.1093\/ajcn\/20.6.613","article-title":"Biopterin and folic acid deficiency.","volume":"20","author":"FLEMING","year":"1967","journal-title":"Am. J. Clin. Nutr."},{"key":"10.1093\/ajcn\/27.11.1247_bib8","first-page":"153","article-title":"Antagonists of growth inhibition of Crithidia by allopurinol, a guanine analog.","volume":"17","author":"JUKES","year":"1972","journal-title":"J. Protozool."},{"key":"10.1093\/ajcn\/27.11.1247_bib9","series-title":"Chemistry and Biology of Pteridines","first-page":"163","article-title":"Catabolism of unconjugated pteridines. Tokyo: International Academic Printing House","author":"REMBOLD","year":"1971"},{"key":"10.1093\/ajcn\/27.11.1247_bib10","series-title":"Regulation of purine biosynthesis. ACS Monograph 170","author":"HENDERSON","year":"1972"},{"key":"10.1093\/ajcn\/27.11.1247_bib11","series-title":"Eighth Symposium on Advanced Medicine","first-page":"285","article-title":"Disorders of purine metabolism.","author":"WATTS","year":"1972"},{"key":"10.1093\/ajcn\/27.11.1247_bib12","doi-asserted-by":"crossref","first-page":"117","DOI":"10.1016\/0304-4165(71)90059-6","article-title":"Catabolism of pteridine cofactors III. On the introduction of an oxygen function into position 6 of the pteridine ring.","volume":"230","author":"REMBOLD","year":"1971","journal-title":"Biochim Biophys. Acta"},{"key":"10.1093\/ajcn\/27.11.1247_bib13","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1007\/BF01072233","article-title":"Serum xanthine oxidase: An experience with 2000 patients.","volume":"18","author":"SHAMMAA","year":"1973","journal-title":"Am. J. Digest Diseases"},{"key":"10.1093\/ajcn\/27.11.1247_bib14","series-title":"Topics in Medicinal Chemistry","first-page":"263","article-title":"Gout and hyperuricemia","author":"MCLAUGHLIN","year":"1970"},{"key":"10.1093\/ajcn\/27.11.1247_bib15","series-title":"Brain Chemistry andMental Disease","first-page":"281","article-title":"Purine metabolism and abnormal behavior in children.","author":"NYHAN","year":"1971"},{"key":"10.1093\/ajcn\/27.11.1247_bib16","series-title":"Advances in Neurology, Vol. 2. Treatment of Parkinsonism, the Role of Dopa Decarboxylase Inhibitors","first-page":"13","article-title":"Enzymology and sites of action of monoamines in the central nervous system.","author":"SOURKES","year":"1973"},{"key":"10.1093\/ajcn\/27.11.1247_bib17","series-title":"Advances in Neurology. Vol. 2: Treatment of Parkinsonism, the Role of Dopa Decarboxylase Inhibitors","first-page":"79","article-title":"Cerebrospinal fluid levels of dopa and 3-O-methyldopa in parkinsonism during treatment with L-dopa and MK-486.","author":"KREMZNER","year":"1973"}],"container-title":["The American Journal of Clinical Nutrition"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002916523336311?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002916523336311?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/academic.oup.com\/ajcn\/article-pdf\/27\/11\/1247\/24156127\/1247.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,3]],"date-time":"2023-11-03T20:16:37Z","timestamp":1699042597000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002916523336311"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1974,11]]},"references-count":17,"journal-issue":{"issue":"11","published-print":{"date-parts":[[1974,11]]}},"alternative-id":["S0002916523336311"],"URL":"https:\/\/doi.org\/10.1093\/ajcn\/27.11.1247","relation":{},"ISSN":["0002-9165"],"issn-type":[{"value":"0002-9165","type":"print"}],"subject":[],"published":{"date-parts":[[1974,11]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Biopterin content of human and rat fluids and tissues determined protozoologically","name":"articletitle","label":"Article Title"},{"value":"The American Journal of Clinical Nutrition","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1093\/ajcn\/27.11.1247","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 1974 American Society for Nutrition. Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}