The total number of circulating lymphocytes (A, B), neutrophils (C, D), and the percentage of monocytes (E, F) in peripheral blood of infant macaques was quantified by flow cytometry one week prior to MSC transplantation (−7) and at 10 and 30 days post-surgery. A, C, E) Data analysis included all animals or only animals injected with MSCs (w/o shams). B, D, F) Data analysis was based on treatment group. Plotted values represent the mean ± SD. Students T test, *,p<0.05; **,p<0.01; #, p<0.005; ++,p<0.001. LD, low dose; HD, high dose.