The toxicity of these molecules is based upon {HEAD ~ their relative affinity} for {TAIL ~ the receptor} which far exceeds that of acetylcholine 
for
The toxicity of these molecules is based upon { HEAD ~ their relative affinity } for { TAIL ~ the receptor } which far exceeds that of acetylcholine
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH