{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T09:59:04Z","timestamp":1778752744108,"version":"3.51.4"},"reference-count":13,"publisher":"Elsevier BV","issue":"2","license":[{"start":{"date-parts":[[1961,7,1]],"date-time":"1961-07-01T00:00:00Z","timestamp":-268358400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biochemical Pharmacology"],"published-print":{"date-parts":[[1961,7]]},"DOI":"10.1016\/0006-2952(61)90145-9","type":"journal-article","created":{"date-parts":[[2002,12,14]],"date-time":"2002-12-14T01:43:08Z","timestamp":1039830188000},"page":"88-95","source":"Crossref","is-referenced-by-count":22929,"title":["A new and rapid colorimetric determination of acetylcholinesterase activity"],"prefix":"10.1016","volume":"7","author":[{"given":"George L.","family":"Ellman","sequence":"first","affiliation":[]},{"given":"K.Diane","family":"Courtney","sequence":"additional","affiliation":[]},{"suffix":"jr.","given":"Valentino","family":"Andres","sequence":"additional","affiliation":[]},{"given":"Robert M.","family":"Featherstone","sequence":"additional","affiliation":[]}],"member":"78","reference":[{"key":"10.1016\/0006-2952(61)90145-9_BIB1","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/0003-9861(56)90319-8","volume":"61","author":"Bonting","year":"1956","journal-title":"Arch. Biochem. Biophys."},{"key":"10.1016\/0006-2952(61)90145-9_BIB2","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1016\/S0021-9258(18)56740-5","volume":"180","author":"Hestrin","year":"1949","journal-title":"J. Biol. Chem."},{"key":"10.1016\/0006-2952(61)90145-9_BIB3","first-page":"114","volume":"116","author":"Jones","year":"1955","journal-title":"J. Pharmacol."},{"key":"10.1016\/0006-2952(61)90145-9_BIB4","first-page":"158","volume":"100","author":"Koelle","year":"1951","journal-title":"J. Pharmacol."},{"key":"10.1016\/0006-2952(61)90145-9_BIB5","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/0003-9861(59)90090-6","volume":"82","author":"Ellman","year":"1959","journal-title":"Arch. Biochem. Biophys."},{"key":"10.1016\/0006-2952(61)90145-9_BIB6","doi-asserted-by":"crossref","first-page":"580","DOI":"10.1016\/0006-3002(56)90200-1","volume":"21","author":"Tabachnik","year":"1956","journal-title":"Biochim. Biophys. Acta"},{"key":"10.1016\/0006-2952(61)90145-9_BIB7","doi-asserted-by":"crossref","first-page":"316","DOI":"10.1016\/0009-8981(57)90009-8","volume":"2","author":"Gal","year":"1957","journal-title":"Clin. Chim. Acta"},{"key":"10.1016\/0006-2952(61)90145-9_BIB8","doi-asserted-by":"crossref","first-page":"1132","DOI":"10.1182\/blood.V10.11.1132.1132","volume":"10","author":"Sabine","year":"1955","journal-title":"Blood"},{"key":"10.1016\/0006-2952(61)90145-9_BIB9","doi-asserted-by":"crossref","first-page":"486","DOI":"10.1007\/BF01751458","volume":"233","author":"Ammon","year":"1933","journal-title":"Pfl\u00fcg. Arch. ges. Physiol."},{"key":"10.1016\/0006-2952(61)90145-9_BIB10","first-page":"230","volume":"93","author":"Wright","year":"1948","journal-title":"J. Pharmacol."},{"key":"10.1016\/0006-2952(61)90145-9_BIB11","first-page":"167","volume":"114","author":"Koelle","year":"1955","journal-title":"J. Pharmacol."},{"key":"10.1016\/0006-2952(61)90145-9_BIB12","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1016\/0006-3002(50)90094-1","volume":"6","author":"Bergmann","year":"1950","journal-title":"Biochim. Biophys. Acta"},{"key":"10.1016\/0006-2952(61)90145-9_BIB13","first-page":"259","volume":"12","author":"Nachmansohn","year":"1951","journal-title":"Advanc. Enzymol."}],"container-title":["Biochemical Pharmacology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0006295261901459?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0006295261901459?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2021,6,1]],"date-time":"2021-06-01T16:44:49Z","timestamp":1622565889000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0006295261901459"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1961,7]]},"references-count":13,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1961,7]]}},"alternative-id":["0006295261901459"],"URL":"https:\/\/doi.org\/10.1016\/0006-2952(61)90145-9","relation":{},"ISSN":["0006-2952"],"issn-type":[{"value":"0006-2952","type":"print"}],"subject":[],"published":{"date-parts":[[1961,7]]}}}