So let's focus in on this ovary. Inside the ovary we have these blood vessels, the arteries that carry nutrients and oxygen to the cells of the ovary. And we have the veins, the blue vessels that carry away the waste products and carbon dioxide and ammonium away from the cells of the ovary. Now let's focus in on the following pathway that basically describes the maturation, the development of that primary oicide into that ovum. So because we're assuming this female individual has been born, that means all these oocides are now primary oocides. All the Ogonia differentiated into primary oocides.