growing a host cell containing {HEAD ~ a DNA construct} comprising in the 5 3 direction of transcription, a transcriptional initiation regulatory region, a translational initiation region, {TAIL ~ a DNA sequence encoding} said fusion protein, and translational and transcriptional termination regions, wherein said expression of said fusion protein is regulated by said initiation and termination regions; and 
growing a host cell containing { HEAD ~ a DNA construct } comprising in the 5 3 direction of transcription , a transcriptional initiation regulatory region , a translational initiation region , { TAIL ~ a DNA sequence encoding } said fusion protein , and translational and transcriptional termination regions , wherein said expression of said fusion protein is regulated by said initiation and termination regions ; and
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH