Fig. 3From: In vitro production of bovine embryos derived from individual donors in the Corral® dishGraphic design of the Corral® dish. This figure is pointing out a distance of 4 mm between the deepest sites of the quadrants. An even larger distance has to be covered by the embryotrophic factors, secreted by the allocated cumulus–oocyte complexes or embryos, to reach another quadrant. The diffusion of secreted factors can only appear in a vertical and oblique direction (bold arrows), due to the well-shaped quadrants and the in-between wallBack to article page