题目内容
简述重组DNA技术中目的基因的获取来源和途径。
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My grandmother was a nurse at the Henry Ford Hospital.
My brother and I could not go out to get a burger or a pizza, for Dad and Mom had time to cook meals at home.
Every summer Jed and I went otstay with our grandparents in Littleton for a few weeks.
"Waste not, want not" was my grandmother's favorite saying.
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