Fig. 4
From: A rare case of giant solitary spinal B cell lymphoblastic lymphoma
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs41016-016-0052-5/MediaObjects/41016_2016_52_Fig4_HTML.gif)
a Hematoxylin and eosin staining (HE × 400): proliferation of lymphoid cells with condensed nuclear chromatin and numerous mitotic figure which sign the lymphoid origin of the tumor. b Tumor cells are positive for CD19 markers consistent with the B-cell origin of the lymphoid proliferation