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Experimental Design Schematic. Days with an ‘E’ designation indicate embryonic day number (i.e., after conception); ‘P’ indicates postnatal day number (i.e., after birth). The days listed in the diagram are our best estimates, as the exact time/day of conception for each dam is not precisely known. Additionally, note that the litter sizes in experiment 2 were equalized to 8 pups each (to eliminate confounding variables related to the number of suckling pups).
