Fig. 1
From: Pathogenesis of acephalic spermatozoa syndrome caused by PMFBP1 mutation
Papanicolaou staining of the spermatozoa from the patient. The sperm morphology analysis revealed a high prevalence of headless sperm tails (pinhead sperm) (black arrowhead), a limited quantity of tailless sperm heads, and aberrant connections between the head and tail segments (black arrow). 100 times oil microscope observation, scale bars = 4 µm