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.
Iron Content of Some Common Foods. 1  Animal sources (called âheme ironâ) include meat, fish and poultry. 2  Our bodies easily absorb this type of iron. 3  Plant sources (called ânon-heme ironâ) include dried beans, peas and lentils and some fruits and vegetables.