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Fig. 1. Dose–response curves for noradrenaline (open squares, N=7)
and phenylephrine (filled squares, N=11) in quiescent cells of the
venom gland of Bothrops jararaca, as assessed by microphysiometry.
Cultured cells were perfused with the agonists for 1 min, a complete
dose–reponse curve was constructed in each well, and the interval
between successive doses was 30 min. All experiments were done in the presence
of the ß-adrenoceptor blocker propranolol. Values are means ±
S.E.M.
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