In general, recombinant techniques involve isolating the genes responsible for coding growth factor, cloning the gene in {TAIL ~ suitable vectors} and cell types, modifying {HEAD ~ the gene} if necessary to encode a desired variant, and expressing the gene in order to produce the growth factor protein product 
In general , recombinant techniques involve isolating the genes responsible for coding growth factor , cloning the gene in { TAIL ~ suitable vectors } and cell types , modifying { HEAD ~ the gene } if necessary to encode a desired variant , and expressing the gene in order to produce the growth factor protein product
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