Before Recombinant DNA Techniques Became Available,human Growth Hormone Was

question 21

Multiple Choice

Before recombinant DNA techniques became available,human growth hormone was

• A) isolated from children who produced excessive amounts of the hormone.
• B) recovered from pituitary glands removed from human cadavers.
• C) recovered from cow blood.
• D) collected from many sources, such as slaughterhouses.
• E) isolated from chicken eggs.

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