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 following foods are high in iron: 1  Meat. 2  Poultry. 3  Fish. 4  Beans. 5  Tofu. 6  Dried fruits. 7  Dark green leafy vegetables, such as spinach and chard. 8  Iron-fortified foods, such as breads and cereals.