2.4 Laboratory tests
Peripheral blood lymphocyte subsets were tested in three cases at onset
and in five cases in the remission period after immunosuppressant
treatment. Flow cytometry was used to distinguish CD3+ T, CD4+T, CD8+T,
CD19+B, and CD56+NK cells. The total number of cells in each subgroup
was counted, and the corresponding percentages were calculated as well
as CD4+/CD8+ ratio.