definiens: shall mean ( i ) any product, now or hereafter developed byXoma, which is produced ( or susceptible of being produced ) from or incorporatesany antibody ( including Fragments thereof as hereinafter defined ) secreted fromthe E5 Cell Line ( as hereinafter defined ) or any other cell line capable ofproducing said antibody, or which product is chemically, organically, biologically or synthetically derived from or based upon any such antibody, ineach case either alone or in combination with any other therapeutic agent . Forpurposes of this Section 1.10, the term shall mean any part or partsof any said antibody chemically, biologically or organically obtained from saidantibody, or synthetically produced, and which mimics the biological behavior ofsaid antibody . For purposes of this Section 1.10, the term shallmean the cell line described as a murine hybridoma as identified by AmericanType Culture Collection No . HB 9081 and mutants and genetically manipulatedvariants thereof ; and ( ii ) any Other Antibody Product, as defined in the R&DAgreement, for which [COMPANY] hereafter exercises its option under Section 4.1thereof -- with respect to the foregoing clauses ( i ) and ( ii ), in each casetogether with all pharmaceutical compositions and dosage units thereof