In neonatally thymectomized (NTx) mice, when examined at 2 month, Con A reactivity, MLR (mixed lymphocyte culture reaction) and IL-2 production of splenocytes were found to be depressed,and NK activity increased sig-nficantly.

• 新生期去胸腺(NTx)小鼠2月龄时脾脏淋巴细胞ConA反应性、MLR和IL-2产生能力均受抑制,而NK活性显著增加。