GHRL and neoplasm: When the tumor was palpable (approximately 1 wk after implantation), tumor-bearing mice were injected with vehicle (saline solution, tumor-vehicle, T+V) or ghrelin (0.8 mg/kg, tumor-ghrelin, T+G) subcutaneously (s.q.)twice/day, while heat-killed mice were injected with vehicle (HK+V) until the end of the experiments (2 weeks after the tumor became palpable).