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Coronal sections of rat hypothalamus illustrating sites of bicuculline microinjection in virgin rats, in which baroreflex control of LSNA and HR were quantified (■), virgin rats in which baroreflex control of HR only was assessed (●), and pregnant rats (○). While injections were usually made on the left side, to enhance clarity, microinjection sites in pregnant rats are shown on the right side. Sections are (from top to bottom) −1.8, −1.88, and −2.12 from bregma.
