Among the topics addressed in papers from the March 1996 symposium: identification of the oxygen sensor in the carotid body by photochemical action spectra, in vitro studies of mechanisms of carotid chemoreceptor resetting after birth, carotid chemosensory response to caffeine in developing cats, regulation of tyrosine hydroxylase mRNA stability in oxygen in PC12 cells, and effects of continuous intracarotid infusion of dopamine during long-term hypoxia in awake goats. Includes b&w and a few color photos. Annotation c. by Book News, Inc., Portland, Or.