About: http://webisa.webdatacommons.org/159011661

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	The efficiency of conversion of provitamin A carotenes into retinol is highly variable, depending on factors such as food matrix, food preparation, and one???s digestive and absorptive capacities (55).
http://www.w3.org/ns/prov#wasQuotedFrom	oregonstate.edu