Fig. 2

Immunocytochemical analysis of CA IX in LNCaP and PC-3 cells, under normoxia and hypoxia. Under normoxia, a negligible CA IX cytoplasmic staining is detected in LNCaP (a) and PC-3 (b) cells, with few positive nuclei. In response to hypoxia, a strong positivity for CA IX appears in the cytoplasm and in the nucleus of LNCaP (c) and PC-3 cells (d) (a-d, original magnification (O.M.): 400x)