Effect of Par3 protein expression on cell morphology, focal adhesion contacts, cell-cell contacts and proliferation rate. (A). Phase contrast images (200×) of the LNCaP cells expressing or not expressing Par3 protein. (B). Immunoflurescent images showing the foci of vinculin (vin) - representative marker for focal adhesion contacts (stained with red indicated with arrows), E-cadherin - (E-cad) representative marker for adherens junctions (stained with red). Zonula occludens-1 (ZO-1) - representative marker for tight junctions is presented with overlay pictures from three independent layers: Differential Interference Contrast (DIC) visualizing cells shape, ZO-1 stained with red (indicated with arrows) and nuclei stained with blue. Size bar is 20 μm. (C). 5 × 103 cells per well were seeded in 24-well format tissue culture plate in RPMI 1640 containing 5% fetal calf serum (FBS). Cells were cultured for indicated time periods, harvested and counted by hemocytometer. Cell numbers are shown as the average ± S.D. of counting of cells in four wells per time-point. The experiment was repeated independently three times with similar results.