Cobratoxin and {TAIL ~ alpha bungarotoxin} have {HEAD ~ highest affinity} for NAchRs containing the alpha 1 and 7 subunits  
Cobratoxin and { TAIL ~ alpha bungarotoxin } have { HEAD ~ highest affinity } for NAchRs containing the alpha 1 and 7 subunits
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH