<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A substance isolated from the pituitary glands of cattle which contains a variety of proteins, hormones, and growth factors. Bovine pituitary extract is used in research as a mitogenic supplement in the cell culture of various epithelial and endothelial cell lines. (NCI04)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>