If your iron is low, eating a diet that is high in iron-rich foods such as fortified cereals, red meat, dried fruit, and beans may not be enough to give you what you need. Your doctor might recommend that you take an iron supplement.
selective. 1  having the function or power of selecting; making a selection. 2  characterized by selection, especially fastidious selection. 3  of or relating to selection. 4  Electricity, Radio. having good selectivity.
A selective medium contains. a substance that inhibits the growth of a certain type of microorganism while permitting the growth of a different type. If chemicals in a medium are manipulated so that the appearance of one microorganism is different from another, the medium is called.