solution Crenation is also used to describe a feature of
red blood cells. These erythrocytes look as if they have projections extending from a smaller central area, like a spiked ball. The crenations may be either large, irregular spicules of
acanthocytes, or smaller, more numerous, regularly irregular projections of
echinocytes. Acanthocytes and echinocytes may arise from abnormalities of the cell membrane lipids or proteins, or from other disease processes, or as an
ex vivo artifact. ==See also==