Generating Inbred Mice. Inbred Strains. A strain is defined as inbred when it has been mated brother x sister for 20 or more consecutive generations (F20). All offspring can be traced back to a single ancestral breeding pair in the 20th or subsequent generation.
suction head. The energy per unit weight of fluid on the suction side of a pump. 1  Facebook.
Definition of HEAD UP. transitive verb. 1. : to close (as a barrel) at the head or with a head. 2. : head vt 4. intransitive verb. 1.