Results 11 to 20 of about 38,921 (268)

Ultrastructural evidence of spermatogenesis in the rusty parrotfish, Scarus ferrugineus (Teleostei Scaridae). [PDF]

open access: yesJournal of Bioscience and Applied Research, 2015
This work analyses the spermatogenesis in the males of Scarus ferrugineus from histological and ultrastructural points of view. This study was carried out during the period of formation of spermatozoa thus being able to determine the pattern of ...
T. Ali, S. Abdel-Aziz
doaj   +1 more source

Meiotic Chromosome Synapsis and XY-Body Formation In Vitro

open access: yesFrontiers in Endocrinology, 2021
To achieve spermatogenesis in vitro, one of the most challenging processes to mimic is meiosis. Meiotic problems, like incomplete synapsis of the homologous chromosomes, or impaired homologous recombination, can cause failure of crossover formation and ...
Qijing Lei   +3 more
doaj   +1 more source

Analysis of DNA methylation changes following Cfp1 knockout in mouse spermatocytes [PDF]

open access: yesAnimal Bioscience
Objective Spermatogenesis is a complex biological process that encompasses meiosis in spermatocytes and the dynamic epigenetic alterations that ensure the inheritance of genetic traits.
Chanhyeok Park   +4 more
doaj   +1 more source

Immunohistochemical localization of glucose transporter 1 and 3 in the scrotal and abdominal testes of a dog

open access: yesLaboratory Animal Research, 2017
Glucose is essential for testicular function; the uptake of carbohydrate-derived glucose by cells is mediated by glucose transporters (GLUTs). In the present study, we investigated the activity of GLUT1 and GLUT3, the two main isoforms of GLUTs found in ...
Kyu Ri Hahn   +11 more
doaj   +1 more source

SYMPK Is Required for Meiosis and Involved in Alternative Splicing in Male Germ Cells

open access: yesFrontiers in Cell and Developmental Biology, 2021
SYMPK is a scaffold protein that supports polyadenylation machinery assembly on nascent transcripts and is also involved in alternative splicing in some mammalian somatic cells. However, the role of SYMPK in germ cells remains unknown.
Rui Wu   +16 more
doaj   +1 more source

UBR2 of the N-end rule pathway is required for chromosome stability via histone ubiquitylation in spermatocytes and somatic cells [PDF]

open access: yes, 2012
The N-end rule pathway is a proteolytic system in which its recognition components (N-recognins) recognize destabilizing N-terminal residues of short-lived proteins as an essential element of specific degrons, called N-degrons.
An, JY   +12 more
core   +1 more source

Spermatocytic Seminoma

open access: yesArchives of Pathology & Laboratory Medicine, 2009
Abstract Spermatocytic seminoma is a rare germ cell tumor distinct from classical seminoma, both clinically and pathologically. It affects older men, has not been associated with a history of cryptorchidism, and has no known counterpart in ovary or any other site.
Nidhi, Aggarwal, Anil V, Parwani
openaire   +2 more sources

A surge of late-occurring meiotic double-strand breaks rescues synapsis abnormalities in spermatocytes of mice with hypomorphic expression of SPO11 [PDF]

open access: yes, 2015
Meiosis is the biological process that, after a cycle of DNA replication, halves the cellular chromosome complement, leading to the formation of haploid gametes.
Barchi, Marco   +9 more
core   +3 more sources

An orchestrated intron retention program in meiosis controls timely usage of transcripts during germ cell differentiation [PDF]

open access: yes, 2017
Global transcriptome reprogramming during sper-matogenesis ensures timely expression of factors in each phase of male germ cell differentiation. Sper-matocytes and spermatids require particularly exten-sive reprogramming of gene expression to switch from
Alberdi, Antonio J.   +9 more
core   +2 more sources

DETECTION OF HUMAN MEIOTIC AND SPERMATOGENETIC ANOMALIES USING LIGHT, ELECTRON AND FLUORESCENCE MICROSCOPY

open access: yesАндрология и генитальная хирургия, 2018
Introduction. Infertility is diagnosed in 10–15 % of couples wishing to have children. In about half cases, the cause is a disorders of male fertility.
O. L. Kolomiets   +10 more
doaj   +1 more source

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