{HEAD ~ The invention} provides nucleic acid sequences which regulate {TAIL ~ expression} of a nucleotide sequence of interest 
{ HEAD ~ The invention } provides nucleic acid sequences which regulate { TAIL ~ expression } of a nucleotide sequence of interest
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH