Central δ/κ opioid receptor signaling pathways mediate chronic and/or acute suckling-induced LH suppression in rats

Yoshihisa Uenoyama1, Miku Nonogaki1, Hitomi Tsuchida1

  • 1Laboratory of Animal Reproduction, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan.

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