Isolation of suppressors of hop 1, sel 12, and spe 4 and isolation of {HEAD ~ molecules} acting in {TAIL ~ the AD pathway} 
acting in
Isolation of suppressors of hop 1 , sel 12 , and spe 4 and isolation of { HEAD ~ molecules } acting in { TAIL ~ the AD pathway }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL