Lysosomal mutations inhibit lipofuscinosis of the spleen in C57BL mice

Beige, bg, and reduced pigmentation, rp, are recessive mutations affecting lysosomal function. Homozygosity for beige prevented lipofuscinosis of the spleen in C57BL mice and its incidence was greatly reduced by homozygosity for rp. Dilute (d) homozygotes, with normal lysosomes, were susceptible to lipofuscinosis even though their melanosomes were more severely affected than those of beige mice.