Effect of theophylline (50 mg/kg bw) on soleus and heart weights in rats bearing the Yoshida AH-130 ascites hepatoma. Results are mean ± SEM. Muscles weights are expressed as mg/100 g of initial body weight (IBW). C = non-tumour-bearing rats, T = tumour-bearing rats, T + TPH = tumour-bearing rats treated with theophylline. Values that are significantly different by two-way analysis of variance (ANOVA) are indicated by: # p < 0.05, ## p < 0.01 (tumour effect); * p < 0.05 (treatment effect).