Pichanun Linharattanaruksa และผู้แต่งคนอื่นๆ. (2012) The expression of prostaglandin E2 receptors (EP2 and EP4) and the proportion of extracellular matrix in cervix of cyclic bitches and bitches with pyometra. Chulalongkorn University:ม.ป.ท.Pichanun Linharattanaruksa และผู้แต่งคนอื่นๆ. 2012. The expression of prostaglandin E2 receptors (EP2 and EP4) and the proportion of extracellular matrix in cervix of cyclic bitches and bitches with pyometra. ม.ป.ท.:Chulalongkorn University;Pichanun Linharattanaruksa และผู้แต่งคนอื่นๆ. The expression of prostaglandin E2 receptors (EP2 and EP4) and the proportion of extracellular matrix in cervix of cyclic bitches and bitches with pyometra. ม.ป.ท.:Chulalongkorn University, 2012. Print.