Papers presented at the 1991 meeting of the International Society for Arterial Chemoreception, held in Chieti, Italy. This field of research, which encompasses diverse biological and medical areas, examines the critical function and mechanisms of O 2 and pH/PCO 2 sensitive cells in the body. The volume is divided into five sections: morphology, cyto- and immunochemistry (14 papers); molecular biology, biophysics and biochemistry (21 papers); neurotransmitter (7 papers); reflex mechanism (10 papers); and developmental and adaptive physiology and pharmacology (9 papers). Annotation copyright Book News, Inc. Portland, Or.