Results 51 to 60 of about 487,985 (362)
DNA fragmentation index (DFI) as a measure of sperm quality and fertility in mice. [PDF]
, 2020 Although thousands of genetically modified mouse strains have been cryopreserved by sperm freezing, the likelihood of cryorecovery success cannot be accurately predicted using conventional sperm parameters.
Li, Ming-Wen, Lloyd, KC Kent
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Involvement of sperm acetylated histones and the nuclear isoform of Glutathione peroxidase 4 in fertilization [PDF]
, 2017 We previously demonstrated that the nuclear form of Glutathione peroxidase 4 (nGPx4) has a peculiar distribution in sperm head, being localized to nuclear matrix and acrosome and that sperm lacking nGPx4 are more prone to decondensation in vitro. In this
Boitani, Carla +8 more
core +1 more source
Come together over me: Cells that form the dermatocranium and chondrocranium in mice
The Anatomical Record, EarlyView., 2023 Abstract Most bone develops either by intramembranous ossification where bone forms within a soft connective tissue, or by endochondral ossification by way of a cartilage anlagen or model. Bones of the skull can form endochondrally or intramembranously or represent a combination of the two types of ossification.
M. Kathleen Pitirri +5 more
wiley +1 more source
Proceedings of the National Academy of Sciences, 2006 When females are sexually promiscuous, the ejaculates of different males may compete for the fertilization of a set of ova, a process known as sperm competition. In internally fertilizing species, potential for sperm competition occurs whenever the ejaculates of different males cooccur in the female reproductive tract at the time of ovulation.
openaire +3 more sources
Sperm morphology and sperm velocity in passerine birds [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2008 Sperm velocity is one of the main determinants of the outcome of sperm competition. Since sperm vary considerably in their morphology between and within species, it seems likely that sperm morphology is associated with sperm velocity. Theory predicts that sperm velocity may be increased by enlarged midpiece (energetic component) or flagellum length ...
Lüpold S +3 more
openaire +5 more sources
Psychological and physiological adaptations to sperm competition in humans [PDF]
, 2005 Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Goetz, AT, Pound, N, Shackelford, TK
core +2 more sources
Step by step optimization of a sperm cryopreservation protocol for spotted wolffish (Anarhichas minor Olafsen, 1772) [PDF]
, 2020 Spotted wolffish Anarhichas minor reproduction in captivity is dependent on in vitro fertilization. However, low sperm volume with relatively low cell concentration and the lack of gametes synchronization (simultaneous availability of mature eggs and ...
Beirão, J. +3 more
core +2 more sources
Long-Term Follow Up of the Erectile Function of Testicular Cancer Survivors
Frontiers in Endocrinology, 2019 The diagnosis of testicular cancer (TC) can have a considerable and persistent impact on a patient's sexuality, especially given its location. The high prevalence of TC in young adults, and the good prognosis, explain the great interest in sexual ...
Francesco Pallotti +6 more
doaj +1 more source
Swimming by spinning: spinning-top type rotations regularize sperm swimming into persistently symmetric paths in 3D [PDF]
arXiv, 2023 Sperm modulate their flagellar symmetry to navigate through complex physico-chemical environments and achieve reproductive function. Yet it remains elusive how sperm swim forwards despite the inherent asymmetry of several components that constitutes the flagellar engine.
arxiv
COVID-19 Severity and Androgen Receptor Polymorphism
Biology, 2022 During the COVID-19 pandemic, the most severe form of the disease was most often seen in male patients. The aim of this study was to identify any male predispositions that could be used to predict the outcome of the disease and enable early intervention.
Alessandra Buonacquisto +19 more
doaj +1 more source