Template:Papanicolaou1933 guinea pig and rat vaginal smear table

Guinea pig	Rat (Long and Evans)
I. Superficial squamous cells with pyknotic nuclei; progressive leucopenia.	1. Small round nucleated cells; disappearance of leucocytes.
Intermediate (cornification) period a. Many cornified cells, usually mixed with type I cells; b. Prevalence of cornified cells with cheesy masses; leucopenia	Cornification period 2. Early cornified cell stage; leucocytes scarce. 3. Late cornified cell stage with
II, III, IV. Appearance of deep layer cells; reappearance and great exodus of leucocytes; gradual disappearance of cornifiecl cells; sometimes erythrocytes present.	4. Leucocytic-cornified cell stage; reappearance of leucocytes; gradual disappearance of the cornified cells.
V. Dioestrus: Leucocytes and atypical atypical vaginal cells.	5. Dioestrus: Leucocytes and vaginal cclls.
Reference: Papanicolaou GN. The Sexual Cycle in the Human Female as revealed by Vaginal Smears. Am J Anat. 1933;52: 519–637.