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Contractile response to aescin of vein strips derived from anatomical locations A (○), B (•) and C (□). For details, see Figures 1 and 2. Data points represent the mean±s.e.mean of 28 tissues (A), 12 tissues (B) and 16 tissues (C) derived from six patients in each case (in one patient, tissues were derived from the right and left leg, with varicosity in both extremities).
