l-Norepinephrine is a naturally occurring catecholamine hormone that functions as a neurotransmitter in the sympathetic nervous system.
Norepinephrine bụ ọgwụ ezinụlọ nke catecholamine na-arụ ọrụ n'ime ahụ dịka homonụ na-akpata nchekasị na neurotransmitter na-amụ anya.