CSK and neoplasm: We evaluated the eclosion rates of wild-type (lacZ), tumor-bearing animals (rasG12V; csk−/−), and tumor-bearing animals with pepck1 knockdown (rasG12V, pepck1RNAi; csk−/−), respectively, that were treated with HS at concentrations of 0 μM, 10 μM, 50 μM, and 100 μM.