What is the X in X-mas?
somatic cell n.
Any cell of a plant or an animal other than a germ cell.
in biology, all the living matter of an animal or a plant except the reproductive, or germ, cells. The distinction between the soma and the germ cells was propounded by the 19th-century German biologist August Weismann in the "germ plasm" theory that emphasized the role of the immortal, heredity-carrying genes and chromosomes, which are transmitted through successive generations of each species and determine the character of each individual in the propagative chain