“…Thus, adrenaline is the predominant amine release in response to hypoglycaemia, 2-deoxyglucose or hypoxia in calves 3-5 weeks after birth (Bloom, Edwards, Hardy, Malinowska & Silver, 1975; Bloom, Edwards, Hardy & Silver, 1976;Bloom, Edwards & Hardy, 1977. In contrast, more noradrenaline than adrenaline is released in response to various stimuli, including splanchnic nerve stimulation, intra-arterial ACh and asphyxia, in anaesthetized calves of the same age (Silver, 1960;Comline & Silver, 1966) and the ratio between the amounts of the two amines released from the gland under these conditions differs markedly from the proportions in which they are stored in the gland (Comline & Silver, 1966).…”