STAT5B and neoplasm: In this work, we analyzed various protein analytes that make up the phosphorylated and non-phosphorylated fractions of the main kinases in the signaling pathways: CREB, JNK, NFkB, p38, ERK1/2, Akt, p70S6K, STAT3, STAT5 proteins in six samples of lysates of Jurkat tumor cells by Luminex technology (MILLIPLEX® MAP 9-Plex Multi-Pathway 9-plex Magnetic Bead Kit).