The effects of YSL plus low-dose doxorubicin on the body weight of nude mice bearing human hepatocellular carcinoma BEL-7402 tumors. BEL-7402 cell (1 × 107/every mouse) was subcutaneously inoculated into the right back of every nude mouse. When the tumors had reached an average volume of 100 mm3, the tumor-bearing nude mice were randomly divided into different groups (n = 12). The mice were administrated i.p. 60 days. The body weights were weighing by electronic balance every three day. Standard deviation was represented by error line. ADM, doxorubicin or adriamycin; YSL, tripeptide tyroserleutide.