Positive Samples: HeLa, Raji, SH-SY5Y, Mouse spleen, Mouse thymus, Rat testis Immunogen sequence: MSPKRIAKRR SPPADAIPKS KKVKVSHRSH STEPGLVLTL GQGDVGQLGL GENVMERKKP ALVSIPEDVV QAEAGGMHTV CLSKSGQVYS FGCNDEGALG. Guanine-nucleotide releasing factor that prom