Results 21 to 30 of about 103,707 (311)

MORPHOLOGICAL CHANGES IN ASTACUS ASTACUS GONADS DURING THE REPRODUCTIVE CYCLE

open access: yesKnowledge and Management of Aquatic Ecosystems, 2006
The reproductive cycle of Astacus astacus was described by the external observation of the gonads, recording changes in the gonadosomatic index (GSI) and by the histological analysis of the reproductive organs.
LUCIĆ A., ERBEN R., LACKOVIĆ G.
doaj   +1 more source

Intense Expression of GFP Gene in Gonads of Chicken Embryos by Transfecting Circulating Primordial Germ Cells in vitro and in vivo

open access: yesThe Journal of Poultry Science, 2007
The present study was carried out to develop techniques for introducing exogenous DNA into primordial germ cells (PGCs) and expressing the introduced DNA efficiently in the gonads of developing chicken embryos.
Mitsuru Naito   +3 more
doaj   +1 more source

Action of the Metalloproteinases in Gonadal Remodeling during Sex Reversal in the Sequential Hermaphroditism of the Teleostei Fish Synbranchus marmoratus (Synbranchiformes: Synbranchidae) [PDF]

open access: yes, 2018
Teleostei present great plasticity regarding sex change. During sex reversal, the whole gonadincluding the germinal epithelium undergoes significant changes, remodeling, and neoformation.However, there is no information on the changes that occur within ...
Antoneli, Fernanda   +3 more
core   +2 more sources

Effects of Feeding Apostichopus japonicus Gonads on the Anti-Fatigue Function of Mice [PDF]

open access: yesProgress in Fishery Sciences
The rapid pace of modern society has led to fatigue becoming a prevalent health problem that affects people of different age groups. Apostichopus japonicus, the only sea cucumber species cultured on a large scale, has recently experienced notable growth ...
ZHAO Shuhao   +5 more
doaj   +1 more source

Gonadotoxic Effects of Nilotinib in Chronic Myeloid Leukemia Treatment Dose in a Mouse Model

open access: yesTurkish Journal of Hematology, 2017
Objective: Tyrosine kinase inhibitors may have deleterious effects on spermatogenesis or folliculogenesis, resulting in male or female subfertility. The aim of this study is to determine the effect of nilotinib, which is used routinely to treat chronic ...
Güldane Seval   +3 more
doaj   +1 more source

DMRT1 is a testis-determining gene in rabbits and is also essential for female fertility

open access: yeseLife, 2023
DMRT1 is the testis-determining factor in several species of vertebrates, but its involvement in mammalian testes differentiation, where SRY is the testis-determining gene, remains ambiguous.
Emilie Dujardin   +10 more
doaj   +1 more source

Insights into Early Ontogenesis of Salmo salar: RNA Extraction, Housekeeping Gene Validation and Transcriptional Expression of Important Primordial Germ Cell and Sex-Determination Genes

open access: yesAnimals, 2023
The challenge in extracting high-quality RNA impedes the investigation of the transcriptome of developing salmonid embryos. Furthermore, the mRNA expression pattern of important PGC and SD genes during the initial embryonic development of Salmo salar is ...
Irfan Ahmad Bhat   +3 more
doaj   +1 more source

Ultrasonographic sex determination of the flathead grey mullet (Mugil cephalus)

open access: yesVeterinary Medicine and Science, 2023
Background Determination of sex in fish without external sexual dimorphism is important. Sex determination of the flathead grey mullet (Mugil cephalus) in the culture system and spawn‐producing and fish reproduction system is very important.
Majid Masoudifard   +5 more
doaj   +1 more source

Characterization of atrazine-induced gonadal malformations in African clawed frogs (Xenopus laevis) and comparisons with effects of an androgen antagonist (cyproterone acetate) and exogenous estrogen (17beta-estradiol): Support for the demasculinization/feminization hypothesis. [PDF]

open access: yes, 2006
Atrazine is a potent endocrine disruptor that both chemically castrates and feminizes male amphibians. It depletes androgens in adult frogs and reduces androgen-dependent growth of the larynx in developing male larvae.
Collins, Atif   +8 more
core   +2 more sources

PATHOLOGIES OF REPRODUCTIVE ORGANS OF CASPIAN FEMALE SEALS (PHOCA CASPICA, GMELIN, 1788)

open access: yesЮг России: экология, развитие, 2016
The aim is to compare morphofunctional conditions of the ovaries and uteruses of Caspian female seals born between the end of XX and beginning of XXI centuries.Methods. We have analyzed the reproductive organs of 16 female seals in the periods of October
V. V. Volodina   +2 more
doaj   +1 more source

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