large well-developed germinal centers ( gcs ) , showing the same cellular organization as in the peripheral lymphatic system , occurred in thymitis with lymphoid follicular hyperplasia , whereas thymitis with diffuse b-cell infiltration merely exhibited a few tiny lymphoid follicles , which could be demonstrated only by immunostaining of dendritic reticulum cells .
C0282491
germinal
C0229654
lymphoid follicles