Cd137l O protein coding gene Ly63l Gene 4-1BB-L|4-1BBL|Cd137l|4-1BB ligand|Ly63l 4-1BBL genetic mapping + http://identifiers.org/mgd/MGI:1101058 4-1BB ligand Tnfsf9 tumor necrosis factor (ligand) superfamily, member 9 4-1BB-L MGI:1101058