Source:http://linkedlifedata.com/resource/umls/id/C0014819
MSH: The production of red blood cells (ERYTHROCYTES). In humans, erythrocytes are produced by the YOLK SAC in the first trimester; by the liver in the second trimester; by the BONE MARROW in the third trimester and after birth. In normal individuals, the erythrocyte count in the peripheral blood remains relatively constant implying a balance between the rate of erythrocyte production and rate of destruction.,CSP: production of red blood cells.,NCI: A hematopoietic process that refers to the production of erythrocytes.