Results 11 to 20 of about 771,580 (202)

Testes asymmetry, condition and sexual selection in birds: an experimental test [PDF]

open access: yes, 1998
The functional significance of the marked directional asymmetry in testes size observed in many bird species is obscure. Møller suggested that (i) the smaller of the two testes serves a compensatory role and increases in size (and hence reduces ...
Birkhead, T.R.   +2 more
core   +2 more sources

REFLEXÕES E ORIENTAÇÕES SOBRE A PRODUÇÃO DE TEXTOS CIENTÍFICOS

open access: yesRevista UniVap, 2011
RESUMO: Tendo em vista as dificuldades apresentadas pela maioria dos pesquisadores iniciantes quanto à redação de textos científicos, este artigo tem como objetivo apresentar algumas reflexões sobre o tema e um resumo das principais competências ...
Maria do Carmo Silva Soares
doaj   +1 more source

Maternal exposure to genistein during pregnancy and oxidative DNA damage in testes of male mouse offspring

open access: yesFrontiers in Nutrition, 2022
BackgroundGenistein is a dietary supplement with phyto-estrogenic properties. Therefore, high intake of genistein during pregnancy may have adverse effects on the genetic integrity of testes and germ cells of male offspring.
Roger W. L. Godschalk   +4 more
doaj   +1 more source

The effect of N-stearoylethanolamine on the lipid composition of the rat testes and testosterone level during the early stages of streptozotocin-іnduced diabetes [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2020
Diabetes is a metabolic disorder with multiorgan complications, including reproductive system dysfunction where lipid imbalance of germ cells play an important role.
O. V. Onopchenko   +5 more
doaj   +1 more source

Cell proliferation and differentiation kinetics during spermatogenesis in Hydra carnea [PDF]

open access: yes, 1985
Spermatogenesis inHydra carnea was investigated. The cell proliferation and differentiation kinetics of intermediates in the spermatogenesis pathway were determined, using quantitative determinations of cell abundance, pulse and continuous labelling ...
A Brauer   +17 more
core   +1 more source

Testicular growth and comb and wattles development in three Italian chicken genotypes reared under free range conditions [PDF]

open access: yes, 2015
Male chickens belonging to three Italian purebreds \u2013 Ermellinata di Rovigo (ER), Robusta lionata (RL) and Robusta maculata (RM) \u2013 were studied. All the birds were reared under the same rearing conditions (from May until autumn).
DE FASSI NEGRELLI RIZZI, Chiara   +1 more
core   +1 more source

The Use of Cognitive Maps for Requirements Elicitation in Product Development

open access: yesJournal of Aerospace Technology and Management, 2016
This article approaches Engineering Requirements concepts and proposes the use of cognitive maps as support to the problem identification of the stakeholders during the requirements elicitation process.
Raquel Dias   +3 more
doaj   +1 more source

Canine and Feline Testicular Preservation

open access: yesAnimals, 2022
The increased interest in breeding dogs and cats and their use as models for other canids and felids demand research to improve reproductive techniques. Among them, testicular cryopreservation stands out.
Lúcia Daniel Machado da Silva
doaj   +1 more source

An unexpected long-term complication of genital burn in a child: Secondary cryptorchidism [PDF]

open access: yes, 2018
Genital and perineal burns are rare and challenging injuries with serious long-term complications. Involvement of the testes is a sign of severity. There is limited knowledge in the literature about the management of complications and testes involvement ...
Deliağa, H.   +3 more
core   +1 more source

Cellular Modifications in Spermatogenesis during Seasonal Testicular Regression: An Update Review in Mammals

open access: yesAnimals, 2022
Testicular regression occurs during the non-breeding season in many mammals. This affects spermatogenesis, resulting in decreased or arrested activity. Both lead to a decrease or cessation in sperm production.
Ester Beltrán-Frutos   +5 more
doaj   +1 more source

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