1. Early-stage endometriosis: adhesion and growth of human menstrual endometrium in nude mice 
Michelle Nisolle, M.D., Ph.D., Françoise Casanas-Roux, B.S., Jacques Donnez, M.D., Ph.D. 
Fertility and Sterility 
Volume 74, Issue 2, Pages (August 2000)
DOI: /S (00)

2. Figure 1
Human endometrial implant on day 1. Human stromal cells are already found to be attached ( ) to the peritoneum. Normal mesothelium is found beneath stromal cells ( ). (Stain, Gomori’s trichrome; original magnification, ×40).
Fertility and Sterility  , DOI: ( /S (00) )

3. Figure 2
Human endometrial implant on day 3. (A), Early invasion of stromal cells in the submesothelial area (between the arrows). (Stain, Gomori’s trichrome; original magnification, ×25). (B), Typical cylindrical glandular cells are noted (black arrow) in some areas but, obviously, invasion is due to stromal cells. (Stain, Gomori’s trichrome; original magnification, ×25).
Fertility and Sterility  , DOI: ( /S (00) )

4. Figure 3
Human endometrial implant on day 5. (A), Dilated and nondilated endometriotic glands surrounded by stromal cells are clearly present in the submesothelial fatty tissue. (A), Stain, Gomori’s trichrome; original magnification, ×10). (B), Numerous well-formed endometriotic glands are noted. (Stain, Gomori’s trichrome; original magnification, ×40).
Fertility and Sterility  , DOI: ( /S (00) )