Immunogen sequence: HLIKQHTAPV SPHSTFFDTF DPSLVSTEDE EDRLRERRRL SIEEGVDPPP NAQIHTFEAT AQVNPLYKLG PKLAPGMTEI SGDSSAIPQA NCDSEEDTTT LCLQSRRQKQ RQISGDSHTH VSRQGAWKVH TQI. Accumulating evidence demonstrates that cytokine receptor signaling is negatively regu