he study on the phenotypes of peripheral blood monnuclear cells(PBMC)was carried
out in infants and children with RSV in-fection using alkaline phosphatase and monoclonal
antialkaline phosphatase(APAAP)technique,The results indicated:1. The per-centage of CD3、
CD4 and CD8 cells decreased significantly in the acute stage of the illness. There were reduced
number of CD8 cells and an increased ratio of CD4/CD8 in patients under one year old with
wheezing in comp...