abstract |
A method of controlling the growth of an undesirable cell such as a cancer cell in a non-human animal is disclosed, which comprises administering to a non-human animal a cytotoxic drug conjugate of formula (I): Z3[CO-Alk1-Sp1-Ar-Sp2-Alk2-C(Z1)=Z2]m, wherein the variables shown in formula (I) are as defined in the specification. |