definiens: means any Product for veterinary therapeutic or prophylactic use, that is : ( a ) [ a TPO agonist ] ; ( b ) [ a TPOlIL3 dual agonist ] ; ( c ) [ a TNFIIL - l dual antagonist ] ; ( d ) [ a p40 ( subunit ofIL-12 and IL-23 ) antagonist ] ; ( e ) [ an agonist or antagonist of CD40 ] ; ( t ) [ an agonist or antagonist of a CD40 ligand ] ; ( g ) [ an agonist or antagonist ofB.7.1 ( CD80 ) ] ; ( h ) [ an agonist or antagonist ofB.7.2 ( CD86 ) ] ; ( i ) [ an agonist or antagonist of CD28 ] ; or U ) [ an agonist or antagonist of CTLA4 ]