Source:http://linkedlifedata.com/resource/umls/id/C0012222
MSH: The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.,CSP: tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space; a major mechanism of biological transport.,NCI: The movement of chemical species under the influence of a concentration difference and as a result of random thermal agitation. The species will move from the high concentration area to the low concentration area till the concentration is uniform in the whole phase.,HL7V3.0: <p>Diffusion</p>