About: http://webisa.webdatacommons.org/87457382

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	U.S. Pat. No. 3,645,852 teaches that cyanogen halides can be used to covalently link water-soluble proteins and water-soluble peptides containing a primary or secondary amino group to a water-insoluble polymer such as cellulose.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com