Southern blot analysis of genomic DNA hybridized with diagnostic probes showed this t haplotype contains the Tcp-10a and Tcp-10b from a t- haplotype and wild-type loci: D17Leh66Dg1, D17Leh66Db1, D17Leh66Dg2, D17Leh66Db2, D17Leh66Dg3, D17Leh66EI, and D17Leh11911. This suggests the tct factor is contained in the proximal partial t haplotype. (J:26112)