[natural hybridization between two subspecies of the house mouse, mus musculus domesticus and mus musculus castaneus, near lake casitas, california]. | the house mouse mus musculus is a polytypic species, distributed worldwide, with three main subspecies: m. m. musculus in the north-east of eurasia, m. m. castaneus in south-east asia, and m. m. domesticus in europe, the near-east, and africa. this last subspecies may also be found in australia and the americas, where it was brought by european colonization. previous studies, however, have shown the presence of specific antiviral determinants of asian origin in a mouse population at lake casitas ... | 1998 | 9549063 |