Figure 4. Histology of the testis of rat treated with MSG and AH showing fairly normal testicular histology with little degeneration of the interstitium (Id) and vacuolization of the seminiferous epithelium (Ev). Seminiferous tubules (ST), interstitium (I), seminiferous epithelium (E) and seminiferous lumen (L). H&E stain; (X400).