During the experiments following drugs were used;
morphine HCl at 0.1, 1, 5 and 10 mg/kg,
mecamylamine HCl at 1 and 3 mg/kg,
coniine at 10 and 20 mg/kg doses and acetic acid.
The drugs were dissolved in saline and were administered intraperitoneally in a volume of 0.1 ml/10 g of body weight.
Dilutions from stock solution were performed on a daily basis.