The original work on {HEAD ~ the correlation} between retinoic acid and {TAIL ~ decrease} in cell proliferation was done by Verma & Boutwell, Cancer Research, 1977, 37, 2196 2201 
between
The original work on { HEAD ~ the correlation } between retinoic acid and { TAIL ~ decrease } in cell proliferation was done by Verma & Boutwell , Cancer Research , 1977 , 37 , 2196 2201
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH