MGI:102707 protein coding gene Ephrin-A2 ephrin A2 LERK-6 Gene Elf-1 O ephrin A6|Elf-1|Ephrin-A2|Epl6|Cek7-L|LERK-6 ephrin A6 genetic mapping Efna2 http://identifiers.org/mgd/MGI:102707 Epl6 + Cek7-L