Mice deleted for IKK2 in 50% of their haematopoietic cells did not display any signs of neutrophilia (Fig. 6E), monocytosis (Fig. 6F), normocytic anaemia (Fig. 6H, Supplementary Fig. S4), thrombocytosis (Fig. 6I) or changes in key HSC populations (Fig. 6J, K, Supplementary Fig. S5). This evidence concerns the gene IKBKB and normocytic anemia.