Th preparation of a double stranded polydeoxy ribonucleotide having cohesive termini {HEAD ~ each} comprising {TAIL ~ one strand} of a double strand restriction endonuclease recognition site and, between the termini, a structural gene coating for the expression of recombinant growth hormone releasing factor, at least a majority of the codons and the coding strand of said gene being codons preferred for the expression of microbial genomes; a method of producing such DNA a recombinant microbial cloning vehicle comprising such DNA and the novel methods of producing said peptide are described 
comprising
Th preparation of a double stranded polydeoxy ribonucleotide having cohesive termini { HEAD ~ each } comprising { TAIL ~ one strand } of a double strand restriction endonuclease recognition site and , between the termini , a structural gene coating for the expression of recombinant growth hormone releasing factor , at least a majority of the codons and the coding strand of said gene being codons preferred for the expression of microbial genomes ; a method of producing such DNA a recombinant microbial cloning vehicle comprising such DNA and the novel methods of producing said peptide are described
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL 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 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH