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Histamine levels in coronary effluents. Coronary effluents from hearts treated with 48/80 (n = 8) (A) or exposed to low-flow ischemia (n = 3) (B) were collected for histamine determination. Coronary effluents were collected following the mast cell-activating protocols described in Fig. 1. Values (mean ± SEM) are derived from triplicate measurements.
