MeSH hyponym : red cell mass; Mass, Red Cell; Masses, Red Cell; Red Cell Masses;
MeSH annotation : restrict to total amount of circulating erythrocytes: do not use for size of individual
erythrocytes (use ERYTHROCYTES / cytol CELL SIZE); ERYTHROCYTE VOLUME, PACKED &
ERYTHROCYTE INDICES are also available; coordinate with disease /physiopathol, not
/ blood;