Immunogen sequence: NLIPRHQELF NKNPVFAGVR LPEIKEREPL ERRYPKLSEV VIDLAKKCLH IDPDKRPFCA ELLHHDFFQM DGFAERFSQE LQLKVQKDAR NVSLSKKSQN RKKEKEKDDS LVEERKTLVV QDTNADPK. The activation of signal transduction pathways by growth factors, hormones and neurotransmit