Chimerism

found: MeSH, Apr. 12, 2011(Chimerism. Scope note: The occurrence in an individual of two or more cell populations of different chromosomal constitutions, derived from different individuals. This contrasts with MOSAICISM in which the different cell populations are derived from a single individual; See also: Chimera, Mosaicism)

found: Wikipedia, Apr. 12, 2011(Chimera (genetics): A chimera is an animal that has two or more different populations of genetically distinct cells that originated in different zygotes involved with sexual reproduction; if the different cells emerged from the same zygote, it is called a mosaicism.)