de Moraes, Érica Paes Barreto Xavier, et al. “Nested PCR Utilization for Toxoplasma Gondii Detection in the Blood of Experimentally Infected Sheep”. Brazilian Journal of Veterinary Medicine, vol. 35, no. 4, Dec. 2013, pp. 329-34, https://bjvm.org.br/BJVM/article/view/637.