Illustration of sperm standard found for the experimental groups. (a) Normal sperm morphology, mostly observed in CTg, GJg and CdGJg. (b,g) Sperm head alterations found in group Cdg: (b) isolated head. (c) Broken head. (d) Amorphous head. Sperm flagellum alterations found in Cdg: (e) winding flagellum. (f) Isolated flagellum. (g) Broken flagellum. All these sperm alterations were also found in CDGJg, but they were less frequent. CTg, control group; Cdg, cadmium group; CdGJg, cadmium and grape juice concentrate group; GJg, grape juice concentrate group. (n = 6/group). Bar=10 μm.