--headings beginning with the word Drug; also individual drugs and groups of drugs, e.g. Narcotics; also subdivision Therapeutic use under individual chemicals and groups of chemicals, e.g. Copper--Therapeutic use; Insulin--Therapeutic use; and subdivision Drug use under names of individual persons and under classes of persons and ethnic groups
--subdivision Effect of drugs on under individual organs and regions of the body, and individual animals and groups of animals, e.g. Foot--Effect of drugs on; Heart--Effect of drugs on; Fishes--Effect of drugs on; and subdivision Receptors--Effect of drugs on under individual chemicals and groups of chemicals, e.g. Insulin--Receptors--Effect of drugs on