Fig. 2
From: Unilateral polyorchidism with severe male infertility: a case report

Transmission electron microscopic observation of sperm ultrastructure. (A) Decreased mitochondrial number and disordered arrangement. (B) Dissolution of the acrosome; decreased mitochondrial number, disordered arrangement, swollen cristae of the mitochondria. (C) Decreased mitochondrial number. (D) Granular changes in the sperm nucleus with increased and enlarged nuclear pores