After cloning in a host cell,
   multiple copies of a gene of interest can be harvested.
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   The cloned genes are useful for basic research, and their proteins can
   be applied to many uses.
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<BR><LI> Pest resistance in plants.
<BR><LI> Cleaning up toxic waste.
<BR><LI> Proteins that dissolve blood clots.
<LI> Human growth hormone (HGH) treats stunted growth.