Although {HEAD ~ all cases} for {TAIL ~ ODC activity increases} are unknown, it is known that 12 O tetradecanoylphorbol 13 acetate induces ODC activity 
Although { HEAD ~ all cases } for { TAIL ~ ODC activity increases } are unknown , it is known that 12 O tetradecanoylphorbol 13 acetate induces ODC activity
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH