@article{articleb2b1876d,
title   = {Modulation of carbachol-induced antinociception from the rat periaqueductal gray},
author = {Guimarães, Ana Paula Ceolotto and Guimarães, Francisco Silveira and Prado, William Alves do},
year = {2000},
doi = {10.1016/s0361-9230(99)00266-x},
journal   = {Brain Research Bulletin}
}