* During pro-oestrus, oestrus and early metoestrus, the epithelium and lamina propria are infiltrated with large numbers of [[Neutrophils|neutrophils]], which eventually escape into the vaginal lumen. | * During pro-oestrus, oestrus and early metoestrus, the epithelium and lamina propria are infiltrated with large numbers of [[Neutrophils|neutrophils]], which eventually escape into the vaginal lumen. |