Preferably, the modulation is induction of {HEAD ~ proliferation} or {TAIL ~ differentiation} of a particular cell type 
Preferably , the modulation is induction of { HEAD ~ proliferation } or { TAIL ~ differentiation } of a particular cell type
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH