In addition thereto, these disulfide compounds did not give a lowering of the potencies and an evolution of {HEAD ~ bad odors} by {TAIL ~ decomposition} in process of preparation or with the elapse of time 
by
In addition thereto , these disulfide compounds did not give a lowering of the potencies and an evolution of { HEAD ~ bad odors } by { TAIL ~ decomposition } in process of preparation or with the elapse of time
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH