Fig. 1

Ultrasonographic view of testes before (a) and 0 (b), 3, (c), 6 (d), 12 (e), 21 (f), 28 (g), 35 (h) and 37 (i) days after injection of zinc gluconate. a before injection, arrow indicates rete testis; b hyperechogenic echotexture indicates injected zinc gluconate solution (arrow); c, d, e, g arrows indicate formation and elimination of cystic like structures; h, i ultrasound view of the testes at the end of the study (day 37)