x1 = y1_IL_15 x2 = y2_Akt x3 = y3_mTOR x4 = y4_HIF_1a x5 = y5_HIF_1b x6 = y6_HIF_1_Complex x7 = y7_NF_KB x8 = y8_STAT3 x9 = y9_HIF_1a_mRNA x10 = y10_HIF_1a_aOH