【英文摘要】 |
The concentrations of Zn, Mn, Al, Cd, Fe, Cu, Pb, Ni, Ti, Co, Li, Cr in serum and change of T lymphocyte subsets and its proliferative response in peripheral blood,and the level of immunoglobulin(Ig) were measured in 92 children with recurrent respiratory tract infections(RRTI). The mean of serum Zn, Fe, Pb, Ni, Ti, Co, Li was decreased and deficiency of Zn, Fe,Li,Co was common in every ages group. There were obvious decrease in T lymphocyte proliferation response, percentage of CD3+ and CD4+ cell, ratio of... |