--subdivision Metabolism--Disorders under individual chemicals and groups of chemicals and under individual organs and regions of the body, e.g. Copper--Metabolism--Disorders; Heart--Metabolism--Disorders
--subdivision Metabolism under individual animals and groups of animals, individual chemicals and groups of chemicals, and individual organs and regions of the body, e.g. Cattle--Metabolism; Fishes--Metabolism; Copper--Metabolism; Heart--Metabolism