Anti botulinal toxin antitoxin is useful for the treatment of patients effected by or at risk of symptoms due to {HEAD ~ the action} of {TAIL ~ C. botulinum toxins} 
of
Anti botulinal toxin antitoxin is useful for the treatment of patients effected by or at risk of symptoms due to { HEAD ~ the action } of { TAIL ~ C. botulinum toxins }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL