Three different CD3-stained slides in non-muscle-invasive bladder cancer (NMIBC) viewed in Panoramic Viewer 1.15.4. Selection of one high-power field (HPF) each for stroma and for tumor infiltration. Invasion front was between these two corresponding HPFs. The images were scanned with digital slide scanner (camera: CIS VCC, Panoramic MIDI Scan; 3DHistech Ltd., Budapest, Hungary). (a) Example for moderate stroma infiltration and low tumor infiltration, (b) example for low stroma infiltration and low tumor infiltration, (c) example for high stroma infiltration and high tumor infiltration.