1. The Missing Niche for Spermatogonial Stem Cells: Do Blood Vessels Point the Way? 
Gunapala Shetty, Marvin L. Meistrich 
Cell Stem Cell 
Volume 1, Issue 4, Pages (October 2007)
DOI: /j.stem
Copyright © 2007 Elsevier Inc. Terms and Conditions

2. Figure 1
A Diagrammatic Representation of the Vascular/Interstitial Niche for the Undifferentiated Spermatogonia in Mouse Testes
Portions of three neighboring seminiferous tubules (gray) are shown with the surface in contact with the vascular/interstitial zones shaded in light yellow. The interstitial space (yellow) contains the blood vessels (red) and interstitial cells (orange). The peritubular myoid cells (blue) surround the tubules, which contain undifferentiated type A spermatogonia (green), differentiated spermatogonia (violet), spermatocytes and spermatids (not colored), and Sertoli cells (tan).
Cell Stem Cell 2007 1, DOI: ( /j.stem )
Copyright © 2007 Elsevier Inc. Terms and Conditions