Mus musculus WSB/EiJ https://www.jax.org/strain/001145 Watkins Star Line B (WSB) was derived from wild mice trapped in Eastern Shore, Maryland. WSB is characterized by a distinct and consistent white head blaze, variable ventral spotting and a slight coat dilution on the agouti background. The variation in pigment is the result of the spontaneous mutation blaze (Kitlblz).Wild-derived mice are genetically distinct from common laboratory mice for a number of complex phenotypic characteristics and are valuable tools for genetic mapping, evolution and systematics research. Sirarat Sarntivijai WSB