Increased MC gene expression in Fog^ki/ki MEP as determined by gene arrays. Genes were grouped according to their expression in stem cell, stem-myeloid, myeloid-MC, erythroid, MK, and lymphoid compartments. Data are shown as fold change (± SEM) from WT and are the average of 3 independent samples analyzed by microarray (6 arrays total). Other indicates relevant hematopoietic transcription factors.