Complex sentence: In macaques, it was found that both blobs and pinwheel centers tend to lie in the center of ocular dominance columns, but no particular relation has been found between pinwheel centers and blobs.
Split into simpler sentences: In macaques, it was found that both blobs and pinwheel centers tend to lie in the center of ocular dominance columns. No particular relation between has been found between pinwheel centers and blobs.