Cell division. Color enhanced micrograph of a dividing human epithelial cell in anaphase of mitosis. During Anaphase, the polar microtubules (green) push the poles of the spindle farther apart. This pushing and pulling action adds to the separation of the daughter chromosomes. In this image, chromosomes (DNA) are blue. These pancreatic epithelial cells secret bicarbonate, which neutralizes acid and is critical to proper digestion. 5040x at 70 mm.