Objective:To study abnormal changes of T lymphocyte and its naive subset (Tn) and memory subset (Tm) of CD_4 cells in severe acute respiratory syndrome (SARS) patients in order to find out cellular immune function of SARS patients,to establish a new laboratory parameter and which may contribute to the preliminary pathogenesis.

Abundance and distribution of eggs and larvae of Engraulis japonicus in the Northern part of East China Sea and the Southern part of Yellow Sea and its relationship with environmental conditions;