definiens: shall mean, collectively, ( a ) all XenoMouse Animals, including all XenoMouse Animals . . with either or both of the Anti ens, and all other materials ecified in Exhibit A ; ( b ) all materials obtained, developed, generated, created, synthesized, designed or env m, based upon, resulting from or otherwise generated ( collectively, ) from the foregoing ( including without limitation ( i ) Antibodies, ( li ) Genetic Materials, ( iii ) amino acid sequences of Antibodies ; ( iv ) Antibody Cells, ( v ) tissues obtained from the XenoMouse Animals, and ( vi ) other tangible reagents~ samples and other chemical or biological materials derived in whole or part from, XenoMouse Animals, Antibodies, Genetic Materials, such amino acid sequences, Antibody Cells or such tissues ) ; ( c ) all fragments, derivatives, progeny, modifications or improvements to, and derivatives 04 the foregoing ; and ( d ) all information of any kind whatsoever regarding the fore oin and all tan · ble and intan ible embodiments thereof of any kind whatsoever ) ; proY ! eel however . the ABX Materials and Information shall not include Research Program Materials and Information