A Little Molecule That Does A Lot.....

a: Each hormone ~
b: a highly specialized key

What: "Each hormone is like a highly specialized key, designed to transmit its message only to certain target receptor cells that are capable of recognizing that particular hormone. Hormones act by turning on or off the genes for a special function, or by regulating the rate at which these functions are performed."

Writer: Terri L. Saunders
Where: Reference Link Has Evaporated
Date: May 9 2013 5:52 PM

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