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.
Meat, Poultry and Seafood. shellfish such as mussels are high in iron Photo Credit Jacek Nowak/iStock/Getty Images. Beef, pork, lamb, dark-meat poultry and seafood are all significant sources of iron. Beef livers, chicken livers and other organ meats are especially high in iron.