Category: Z

The use of animal tissue in grafting on a human body.  

A graft of tissue obtained from an animal.  

The study of the distribution of animals on the earth.  

The development and evolution of animals. The examination of animal reproduction, development, and evolution.  

A yellow pigment derived from certain animal feathers.  

The portion of the junctional complex between columnar epithelial cells just below the free surface where the intercellular space is obliterated. Also called tight junction.  

The suspensory ligament of the crystalline lens.  

The portion of the junctional complex between columnar epithelial cells below the zonula occludens where there is an intercellular space of about 200 A.U. and the cellular membranes are supported by filamentous material.  

Passing from outside into a zone or area of the body.  

The occurrence of a stronger fixation of complement in a lesser amount of suspected serum; a phenomenon occasionally observed in diagnosing syphilis by the complement-fixation method.