our analysis of three recently described w alleles ( 5 ) confirms reports ( 3,6 ) that ( a ) w mutations alter skin mast cell number in parallel with their influence on red cell number ( but not with pigmentation ) , ( b ) that mast cells arise from hematopoietic tissue ( 7 ) and ( c ) that injections of normal bone marrow cells , which cure the anemias of w/wv recipients , also alleviate the deficiency of skin mast cells in these mice .
C0229619
hematopoietic tissue
C0024880
mast cells