Figure 1.

Representative examples of pRb2 staining in BL patients from Uganda. A) Negative staining (original magnification: ×400). B) Low staining, i.e. less than 50% of tumour cells expressing pRb2 (original magnification: ×400). C) High staining, i.e. more than 50% of tumour cells expressing pRb2 (original magnification: ×400) D) Cytoplasmic expression of pRb2 in tumour cells undergoing mitosis. Dividing cells are indicated by arrows (original magnification: ×630).