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(A) Relaxation with ACh (n=6) and (B) relaxation with the NO donor SNAP (n=5) in the absence and presence of oxyhaemoglobin (Oxyhgb). (C) ACh relaxation (n=8) and (D) SNAP relaxation (n=5) in the absence and presence of ODQ. (E) ACh relaxation (n=4) and (F) SNAP relaxation (n=3) in the absence and presence of Rp-8-Br-PET-cGMPS (Br-PET-cGMPS). The human small arteries were all pretreated with indomethacin (3 μM). Data are means±s.e.mean.
