Figure 1From: The tumour-associated carbonic anhydrases CA II, CA IX and CA XII in a group of medulloblastomas and supratentorial primitive neuroectodermal tumours: an association of CA IX with poor prognosis Representative immunostaining of CA enzymes in MBs. Panel A shows no immunoreaction for CA IX, whereas the tumour in panel B is strongly positive. Panel C demonstrates CA XII-positive immunoreactivity in tumour cells. In panel D, CA II-positive immunostaining is confined to the endothelium of small blood vessels (arrows). All magnifications Ă—400.Back to article page