Thymocyte development was not perturbed in gal-1–deficient C57Bl/6 mice. (A) CD8 versus CD4 expression profiles of thymocytes from 6.2-week-old wild-type (left) and gal-1^−/− (right) mice. The percentage of cells in each developmental subset is denoted in its respective quadrant. Flow profiles are representative of 6 independent mice. (B) The graph shows the mean of the absolute cell numbers (± SD) for each subpopulation, which was determined by multiplying the percentage of cells in each subset by the total number of thymocytes and averaging 6 mice per genotype.