Source:http://linkedlifedata.com/resource/umls/id/C0025252
MSH: Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.,CSP: proteins which are found in membranes including cellular and intracellular membranes; consist of two types, peripheral and integral proteins; includes most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors; note that individual membrane proteins have not been exhaustively treed under this term.,NCI: Proteins that are physically associated with the membrane. This class of proteins resides in cellular or intracellular membranes. The physical association of each protein is divided into two classes: integral and peripheral.