Pseudomonilethrix. An artifact.
Pseudomonilethrix is a microscopic hair shaft abnormality characterized by small beaded globular swellings. It is an artifact produced while preparing hairs for microscopic examination and occurs when overlapped hairs are pressed together between glass slides. Evidence documenting this finding is presented.
D006197:Hair / Q000002:abnormalities / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D013048:Specimen Handling