Fig. 1From: Viral infections that alter estrogen levels during pregnancy may contribute to the etiology of cryptorchidismSchematic of the model postulating a viral etiology for post-natal cryptorchidism. The infectious agent shown is a model of Zika virus from the Protein Databank (www.rcsb.org/structure/5IRE). E2, 17-β-estradiol; S, pre-scrotal cryptorchidism; I, inguinal cryptorchidism; A, abdominal cryptorchidismBack to article page