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.
The foods with the highest iron content are: 1  Meat, especially beef and liver. 2  Poultry â chicken livers are packed with iron. 3  Fish and shellfish, especially oysters. 4  Leafy greens, like kale, spinach, and broccoli. 5  Beans and peas. 6  Iron-enriched breads, pastas, and cereals.