Mkl1 deficiency does not affect LSK, pre-MegE cell numbers, and CFU-MK formation. (A) Two tibias and 1 femur from each mouse were collected. After BM harvest and red blood cell lysis, total cell numbers were counted (n = 6 per genotype). (B) Comparison of percentage of LSK cells in WT, HET, and Mkl1 KO BM (n = 9 per genotype). (C) Comparison of percentage of pre-MegE cells in WT, HET, and Mkl1 KO BM (n = 9 per genotype). (D) CFU-MK potential from total BM (n = 6 per genotype).