Proteins of Plasma Albumin GlobulinFibrinogen prevents water from leaving the blood and entering the surrounding cells by osmosis helps maintaining the concentration of water in the blood & at the same time concentration of water in body tissues involves in blood clotting some of them involved in protein transport some of them called antibodies bind foreign substances to destruct them ***Blood is a liquid tissue which contains both dissolved and suspended materials that travel through the blood vessels to every part of the body.