Map of major histocompatibility complex subregions influencing vaginal septa frequency

The frequency of dorso-ventral vaginal septa (DVS) in mice in influenced by genes associated with the major histocompatibility complex, H-2. Data shows that two subregions within the H-2 complex, K-E beta and D, have a very strong influence on the frequency, while the E beta-S subregion appears to have a weak effect.