Figure 4: (a): Section of mature Westar rats testis of control group (I) showing normal, intact rounded or oval seminiferous tubules. H&E 4X:10X. (b): Section of mature Westar rats testis of control group showing closely packed seminiferous tubules separated from each other by a considerable amount of interstitial connective tissue. H&E 10X:10X. (c): Section of mature Westar rats testis of control group showing normal interstitial connective tissue (arrow head) and normal; proliferating highly divided germ cells with non-divided elongated sertoli cells (S). H&E Obj.x20: 10X. (d): Section of mature Westar rats testis of control group showing normal interstitial connective tissue with ovoid or polygonal leydig cells (arrow) and flat myoid cells (arrow head). H&E 4X0: 10X. (e): Section of mature Westar rats testis of exposed group to tartrazine (II) showing proliferation and hyperplasia of the interstitial leydig cells (arrow). H&E 10X : 10X. (f,g): Section of mature Westar rats testis of exposed group to tartrazine (II) showing proliferation and hyperplasia of the interstitial leydig cells with vacuolation of the interstitial CT. (f,g) H&E f) 4X0 : 10X. g) Obj. x20: Oc.x15. (h,i): Section of mature Westar rats testis of exposed group to tartrazine with royal jelly (III) showing also proliferation and hyperplasia of the interstitial leydig cells with vacuolation of the interstitial CT. h) H&E Obj.x20: 10X. i) 4X0: 10X Blue Masson’s Trichrome. (j,k): Section of mature Westar rats testis of exposed group to tartrazine with code liver oil (IV) showing the same as exposed group to tartrazine with royal jelly. (j,k ) H&E j) Obj.x20: 10X k) 4X0: 10X. (l): Section of mature Westar rats testis of group (V, VI) showing normal, intact seminiferous tubules with normal stratified seminiferous lining epithelium and normal interstitial connective tissue. H&E l) Obj.x20: 10X.