>sp|Q8UUJ9|SDF1_XENLA Stromal cell-derived factor 1 OS=Xenopus laevis GN=cxcl12 MDIRTLALLSILLGTLCLTEGKPVSLVYRCPCRYFESNVPKSNIKHLKILSTSNCSLQIV ARLKHNGKQICLDPKTKWIQEYLEKALNKKAKKT