Figure 5: spermatogenic cells and yield in Stage VII of seminiferous tubules mature Kangaroo testis, spermatogonia (G), preleptotene (Pr), leptotene (L), pachytene (P), spermatid stage VII (7), stage XVI (16), red outline (Leydig cell clusters), blue outline (individual cells). Hematoxylin and eosin stain. Line scale=40 μm.