Figure 7From: Evaluation of gut modulatory and bronchodilator activities of Amaranthus spinosus Linn. Concentration-response curves of Ca ++ in the absence and presence of (a) the crude extract of A. spinosus (As.Cr) and (b) diltiazem in isolated rabbit trachea. Values are expressed as mean ± S.E.M., n = 3–5.Back to article page