Figure Legend
Figure 1 The morphology and ultrastructure of spermatozoa from two patients. (a) Sequence chromatograms of two patients. Sanger sequencing confirmed the SOHLH1 mutation in the patients. The red arrow denotes the mutation site (NG_033784.1: c.346-1G>A). (b) Papanicolaou staining of patients’ sperm, most of which were amorphous head and irregular flagella. (c) The abnormal sperm phenotypes were observed in the patients by SEM. (d) TEM showed the abnormal ultrastructures of the head and flagella from the patients’ spermatozoa.