Technical Papers The Inhibition of the Cholinesterase Activity of Human Blood Plasma by Neutral Phosphate Esters. II: Studies with Hexa 1-C14-Ethyl Tetrapolyphosphate + See all authors and affiliations Science 14 Oct 1949:Vol. 110, Issue 2859, pp. 395-396DOI: 10.1126/science.110.2859.395 Ralph W. BrauerFind this author on Google Scholar Find this author on PubMed Search for this author on this site Rita L. PessottiFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.