Explores the latest research on marijuana, including the scope of marijuana use in the U.S., health consequences, its effects on every-day activities, available treatments.
Definition of homunculus. plural. homunculi. play \hÅ-ËmÉÅ-kyÉ-ËlÄ«, -ËlÄ\. 1 : a little man : manikin. 2 : a miniature adult that in the theory of preformation is held to inhabit the germ cell and to produce a mature individual merely by an increase in size.
A blastocyst is a cellular mass that forms early in the process of embryo development in mammals. In humans, this stage of embryogenesis occurs five days after fertilization, when there are fewer than 100 cells in the mass.