Objective To explore the mechanism of CD4+T lymphocyte differentiation in immunodeficient rats based on the correlation between Janus kinase/signal transducer and activator of transcription(JAK/STAT)signaling pathway and a low percentage of CD4+T l...MORE Objective To explore the mechanism of CD4+T lymphocyte differentiation in immunodeficient rats based on the correlation between Janus kinase/signal transducer and activator of transcription(JAK/STAT)signaling pathway and a low percentage of CD4+T lymphocytes in immunodeficiency diseases.Method...