Fig. 4
From: Novel bi-allelic MSH4 variants causes meiotic arrest and non-obstructive azoospermia
Expression of recombination proteins DMC1 and acrosomal marker PNA in the testis of patients with NOA and a patient with OA as a positive control. IHC staining showed the expression of DMC1 (green) and PNA (red) in the testis of the P9359 (A), P9517 (B), P9540 (C), P21504 (D), and a patient with OA (E). Arrow indicates the acrosome of spermatids in the testis. Scale bars = 50 μm