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    • Evidence for Two Different Types of βReceptors in Man - Nature

      Nature· 6 hours ago

      THE diversity of actions of catecholamines at β-receptors led Lands1 to suggest that there are two β-receptor populations; β “1” concerned with lipolysis and cardiac stimulation, and β “2” with bronchodilatation and vasodepression.

    • Societies and Academies - Nature

      Nature· 8 hours ago

      The new plumage over the rest of the body is characterised by loss of black pigment and increase of fringing due to lack of barbules.