The development of secondary lymphoid organs begins when T and B cells intermingle and then separate into distinct T and B cells areas, followed by the induction of GC in T cell areas.

• 当T和B淋巴细胞掺和在一起，随后又分成T和B淋巴细胞区时，次级淋巴器官开始发育，随后受到T淋巴细胞区GC的诱导。