Clinical remission in 30 dogs with lymphoma was induced with a combination of vincristine, L-asparaginase, cyclophosphamide, and doxorubicin HCl, administered sequentially, and then an autochthonous tumor cell vaccine, given intralymphatically, as maintenance therapy. Humoral antibody amounts were monitored in 11 dogs, using a solid-phase bead-type radioimmunoassay. The median survival of the 30 dogs was 13 months from the start of chemotherapy (range, 7 to 25 months; mean, 13.8). The median remission duration was 16 weeks (range, 9 to 98 weeks; mean, 26.8). Correlation between increase in amount of humoral antibody was significant (P = 0.0001 to 0.012), before and after chemoimmunotherapy, in dogs responding to therapy, compared with that in dogs not responding to therapy.
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