Immunogen sequence: ALERVLRLPA VASKRYLTNK VDRSVGGLVA QQQCVGPLQT PLADVAVVAL SHEELIGAAT ALGEQPVKSL LDPKVAARLA VAEALTNLVF ALVTDLRDVK CSG Highest antigen sequence identity to the following orthologs: Mouse - 95%, Rat - 96%. Purines are necessary for many cel