title: Tubules in semen of infertile patients. Case report.
abstract: Numerous groups of small tubules were observed in the semen of two infertile patients. These structures were about 80 nm in diameter and could be observed within larger concentric tubules. They did not resemble typical microtubules, and did not appear similar to unit membrane.
mesh_terms: D000328:Adult; D006801:Humans; D007248:Infertility, Male / Q000473:pathology*; D008297:Male; D008854:Microscopy, Electron; D012661:Semen / Q000473:pathology*