Hemangioblastoma : CD34
Endothelial cells (but not stromal cells) in hemangioblastoma show immunoreactivity for markers such as CD34 and CD31 (next image). Courtesy of: Dr. Luciano de Souza Queiroz, Dept. of Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Sao Paulo State, BRAZIL. Additional images are here.