The term 'IT'S FOUND IN VEINS' can be solved by the crossword solutions of 'BLOOD' (5 letters) and 'ORE' (3 letters). BLOOD is a vital fluid that circulates throughout the body, carrying oxygen and nutrients to the cells and removing waste products. It is composed of red BLOOD cells, white BLOOD cells, platelets, and plasma. ORE is a naturally occurring rock or mineral from which a valuable metal or valuable mineral can be extracted. It is mined for its valuable metals or minerals, which are then used in various industries.