_id,doi,title
2600,10.1016/S0168-0102(00)00095-X,The relationship between neurokinin-1 receptor and substance P in the medullary dorsal horn: A light and electron microscopic immunohistochemical study in the rat
2583,10.1016/S0168-0102(97)00132-6,Substance P receptor (NK1)-immunoreactive neurons projecting to the periaqueductal gray: Distribution in the spinal trigeminal nucleus and the spinal cord of the rat
2563,10.1016/0168-0102(95)00961-R,Trigeminoparabrachial projection neurons showing substance P receptor-like immunoreactivity in the rat