The retinoic acid like activity of these compounds is confirmed through the classic measure of retinoic acid activity involving {HEAD ~ the effects} of retinoic acid on {TAIL ~ ornithine decarboxylase} 
The retinoic acid like activity of these compounds is confirmed through the classic measure of retinoic acid activity involving { HEAD ~ the effects } of retinoic acid on { TAIL ~ ornithine decarboxylase }
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 OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL