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