Cellular Networks Stained for the Presence of Basement Membrane Proteins (image) University of California - San Diego Share Print E-Mail Caption Cellular networks are stained for the presence of basement membrane proteins. This positive stain is evidence that these structures share similarities with the phenomenon referred to as vasculogenic mimicry. Credit University of California San Diego Usage Restrictions Please credit University of California San Diego Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.