- rim2 (recombination-induced mutation 2) is a new allele of pearl and a mouse model of human Hermansky-Pudlak syndrome (HPS): genetic and physical mapping. Sagai, T., Koide, T., Endo, M., Tanoue, K., Kikkawa, Y., Yonekawa, H., Ishiguro, S., Tamai, M., Matsuda, Y., Wakana, S., Shiroishi, T. Mamm. Genome (1998)