Estrogen receptor-alpha immunoreactive neurons in the ventrolateral periaqueductal gray receive monosynaptic input from the lumbosacral cord in the rhesus monkey.
Vanderhorst, Veronique G J M, Ei Terasawa, and Henry J Ralston. 2002. “Estrogen Receptor-Alpha Immunoreactive Neurons in the Ventrolateral Periaqueductal Gray Receive Monosynaptic Input from the Lumbosacral Cord in the Rhesus Monkey.”. The Journal of Comparative Neurology 443 (1): 27-42.