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.
Foods high in iron include: 1  red meat. 2  seafood. 3  organ meats, such as liver. 4  whole grains. 5  dried fruits. 6  nuts. 7  beans, especially lima beans. 8  dark green leafy vegetables, such as spinach and broccoli. 9  iron-fortified foods, such as breads and cereals (check the label).