While linoleic acid is readily available from certain vegetable fats, there is no known comparable source of arachidonic acid. In the animal body arachidonic acid is synthesized mainly from linoleic acid. 2 In serum, arachidonic acid forms part of the cholesterol ester fraction. The amount present seems to be species specific, and has been inversely related to the susceptibility of the species to artificially induced atherosclerosis. a This tends to ...
