Bird, D J Annulate lamellae and single-pore complexes in human spermatogonia. [electronic resource] - Journal of submicroscopic cytology Oct 1986 - 823-8 p. digital Publication Type: Journal Article ISSN: 0022-4782 Subjects--Topical Terms: AdultAgedCell Nucleus--ultrastructureCryptorchidism--pathologyHumansMaleMicroscopy, Electron--methodsMiddle AgedSpermatogonia--ultrastructureSpermatozoa--ultrastructureTesticular Diseases--pathologyTestis--pathology