For example, general, well defined promoter sequences of chicken β actin and C. elegans ribosomal genes have successfully directed {HEAD ~ expression} of {TAIL ~ GFP} in hydra  
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For example , general , well defined promoter sequences of chicken β actin and C. elegans ribosomal genes have successfully directed { HEAD ~ expression } of { TAIL ~ GFP } in hydra
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH