Figure 5. Effects of L-arginine (0.1 mM), aminoguanidine (1 mM), and electrical transmural stimulation [down tri, filled]; 3 Hz for 5 s) on gastric fundus strips isolated from rats treated with LPS (2 mg/kg) for 6 h. In the presence of atropine (1 micro Meter) and guanethidine (5 micro Meter), the strips were precontracted by prostaglandin F2alpha (1 micro Meter).