chimeric

adjective

chi·​me·​ric kī-ˈmir-ik  kə- 

-ˈmer-

1

: relating to, derived from, or being a genetic chimera : containing tissue with two or more genetically distinct populations of cells

chimeric mice

2

: composed of material (such as DNA or polypeptide) from more than one organism

a chimeric gene

… scientists have created so-called chimeric antibodies, using genetic engineering to fuse variable regions derived from mouse antibodies with a constant region derived from human antibodies.

—Lawrence M. Fisher, The New York Times