in histochemical ( with the glyoxylic acid ) and biochemical ( spectrofluorimetric trioxyindolic method ) investigations sources and content of catecholamines ( dopa , noradrenalin , adrenalin ) in the blood vessels , sympathetic chains , adrenals and cardiac ventricles have been studied in autumn-winter and spring-summer frogs at various temperatures .
C0028351
noradrenalin
C0014563
adrenalin