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.
What foods are high in iron? The iron in food comes from two sources: animals and plants. Iron from animal sources is known as heme iron and is found in various meats and fish. Iron from plants is known as nonheme iron, and is found in certain vegetables and in iron-fortified foods such as breakfast cereals.