[Hemoglobin concentration, hematocrit and leukocyte distribution pattern in children with Down's syndrome].

Sixty-two children with Down's syndrome and twenty-five healthy children, aged 3 months to 10 years, were studied. It was found that the hematocrit values and concentrations of hemoglobin in Down's syndrome were insignificantly higher than in healthy children, while their leukocyte count was slightly lower. The leukocyte distribution patterns in children with Down's syndrome, aged 3 months to 3 years, were similar to those in healthy children. However, children aged 3.5-10 years with Down's syndrome had a slightly higher percentage of neutrophiles and a significantly lower percentage of lymphocytes. The percentage of E-rosette-forming cells and count of T-lymphocyte forming these rosettes in Down's syndrome were significantly lower than in healthy children.