any of a group of proteins, as myosin, occurring in plant and animal tissue, insoluble in pure water but soluble in dilute salt solutions and coagulable by heat.
Anatomy, Physiology. a clear yellowish, slightly alkaline, coagulable fluid, containing white blood cells in a liquid resembling blood plasma, that is derived from the tissues of the body and conveyed to the bloodstream by the lymphatic vessels.
