definiens: shall mean ( i ) any corporation or business entity of which fiftypercent ( 50 % ) or more of the securities or other ownership interests representing theequity, the voting stock or general partnership interest are owned, controlled or held, directly or indirectly, by MERCK or ISIS ; or ( ii ) any corporation or business entity which,'-directly or indirectly, owns, controls or holds fifty percent ( 50 % ) ( or the maximumownership interest permitted by law ) or more of the securities or other ownership interestsrepresenting the equity, the voting stock or, if applicable, the general partnership interest, of MERCK or ISIS ; or ( iii ) any corporation or business entity of which fifty percent(50 % ) or more of the securities or other ownership interests representing the equity, thevoting stock or general partnership interest are owned, controlled or held, directly orindirectly, by a corporation or business entity described in ( i ) or ( ii )