Corpus luteum - Development and structure. 1  The corpus luteum develops from an ovarian follicle during the luteal phase of the menstrual cycle or oestrous cycle, following the release of a secondary oocyte from the follicle during ovulation.
Iron found in foods is either in the form of heme or non-heme iron. Heme iron is better absorbed than non-heme iron. Foods containing heme iron are the best for increasing or maintaining healthy iron levels. Such foods include (in order of iron-richness) clams, oysters, organ meats, beef, pork, poultry, and fish.
Meat, fish, and poultry are good sources of iron. They contain heme iron, a form of iron that your body absorbs very well. Fruit, vegetables, eggs, and grains such as pasta, rice, and cereal also contain iron. They contain nonheme iron, a form of iron that is not absorbed as well as heme iron. You can absorb more iron from these foods by eating a food that is high in vitamin C at the same time.