Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Immunohistochemical staining for doubly phosphorylated ATF-2pp (Thr69/71) in a tonsil biopsy sample (A) and a case of BL (B). A subpopulation of large centroblasts in germinal centres of tonsils (black arrows) expresses high levels of ATF-2pp in contrast to most of the other germinal centre cells that express only low levels of the protein. In BL, most of the tumour cells express high levels of ATF-2pp, with the exception of the apoptotic tumour cells
