The Ly6a-GFP transgene contains an enhanced green fluorescent protein (EGFP) and the simian virus 40 (SV40) polyadenylation (polyA) sequence under the control of murine lymphocyte antigen 6 complex, locus A (Ly6a) promoter. Several lines were created. Line G5 has 8 copies of the transgene. (J:158054)