Fig. 1. Frozen sections of prostate were labelled with anti ₂-integrin antibody, directly conjugated to fluorescein isothiocyanate (FITC), and viewed by confocal microscopy. The intensity of fluorescence was measured along a line drawn through the lateral cell borders. (A) Section of human prostate stained with a FITC-conjugated antibody to the ₂-integrin subunit. (B) Fluorescence was measured along basolateral cell borders, with each numbered peak corresponding to one cell border. Peaks 3-4 shows a brightly stained cell surrounded by weakly stained cells (peaks 1-2, 5-6).