About: http://webisa.webdatacommons.org/167231601

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	Negatively charged and particularly thick, these membranes allow small ions, or negatively charged molecules, and fluid to pass while retaining large molecules and positively charged molecules, such as proteins.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com