is cytisine a receptor blocker
Results Of the three nicotinic receptor agonists tested, [3H]cytisine displayed the highest affinity for the neu- ronal nicotinic receptor (Table 1). It had a significantly higher affinity of 0.145 + 0.011 nM (P < 0.05, Fig. 1A) as compared to KD values of 0.89 + 0.06 and 1.07 _+ 0.13 nM for [3H]nicotine (Fig.