Sebastian Michaelis or Sebasuchan Mikaerisu is one of the main characters of manga and anime Kuroshitsuji (Black Butler). Michaelis is the butler and faithful servant of the protagonist, Ciel Phantomhive, who is a 13 year old boy who is responsible for s   […]

The trophoblast is a structure constituted by a set of cells that form the outer layer that surrounds a blastocyst, in early stages of the embryonic development of mammals. The term comes from the Greek trofos, which means to feed; and of blasto, which   […]