Results 1 to 10 of about 1,075,400 (354)

Circadian regulation of reproduction: From gamete to offspring [PDF]

open access: yes, 2013
P01326625; Grants: GNT0519315Few challenges are more critical to the survival of a species than reproduction. To ensure reproductive success, myriad aspects of physiology and behaviour need to be tightly orchestrated within the animal, as well as timed ...
Boden, M., Kennaway, D., Varcoe, T.
core   +1 more source

Cilia, calcium and the basis of left-right asymmetry

open access: yesBMC Biology, 2012
The clockwise rotation of cilia in the developing mammalian embryo drives a leftward flow of liquid; this genetically regulated biophysical force specifies left-right asymmetry of the mammalian body.
Norris Dominic P
doaj   +1 more source

The effect of exogenous glucose infusion on early embryonic development in lactating dairy cows [PDF]

open access: yes, 2018
peer-reviewedThe objective of this study was to examine the effect of intravenous infusion of glucose on early embryonic development in lactating dairy cows. Nonpregnant, lactating dairy cows (n = 12) were enrolled in the study (276 ± 17 d in milk). On d
Butler, Stephen   +9 more
core   +2 more sources

The signal that stimulates mammalian embryo development

open access: yesFrontiers in Cell and Developmental Biology
Embryo development is stimulated by calcium (Ca2+) signals that are generated in the egg cytoplasm by the fertilizing sperm. Eggs are formed via oogenesis.
Zoltan Machaty
doaj   +1 more source

The Regulation and Functions of Endogenous Retrovirus in Embryo Development and Stem Cell Differentiation

open access: yesStem Cells International, 2021
Endogenous retroviruses (ERVs) are repetitive sequences in the genome, belonging to the retrotransposon family. During the course of life, ERVs are associated with multiple aspects of chromatin and transcriptional regulation in development and ...
Yangquan Xiang, Hongqing Liang
doaj   +1 more source

Differential Expression Of Gap Junction mRNAs And Proteins In The Developing Murine Kidney And In Experimentally Induced Nephric Mesenchymes [PDF]

open access: yes, 1992
The expression of three gap junction (GJ) proteins, alpha-1 (Cx43), beta-1 (Cx32), and beta-2 (Cx26), and their transcripts were examined during the ontogeny of the mouse and rat kidney. These proteins were expressed in two non-overlapping patterns.
Gilbert, Scott F.   +6 more
core   +1 more source

Prospects for transgenesis in the chick [PDF]

open access: yes, 2004
Research to develop a useful method for genetic modification of the chick has been on-going since the first demonstrations in the mouse in the 1980s that genetic modification is an invaluable tool for the study of gene function. Manipulation of the chick
Bosselman   +52 more
core   +1 more source

Comparison of the Zebrafish Embryo Toxicity Assay and the General and Behavioral Embryo Toxicity Assay as New Approach Methods for Chemical Screening

open access: yesToxics, 2020
The movement away from mammalian testing of potential toxicants and new chemical entities has primarily led to cell line testing and protein-based assays.
John C. Achenbach   +4 more
doaj   +1 more source

Synthetic Embryos: Windows into Mammalian Development [PDF]

open access: yesCell Stem Cell, 2017
Mammalian embryonic stem cells (ESCs) can self-organize in vitro, but whether they can recreate early embryonic morphogenesis is unclear. Harrison et al. recently demonstrate in Science that 3D co-cultures of mouse ESCs and trophoblast stem cells self-organize into embryo-like structures that recreate many features of early mouse development.
openaire   +2 more sources

Protease signaling regulates apical cell extrusion, cell contacts, and proliferation in epithelia. [PDF]

open access: yes, 2018
Mechanisms that sense and regulate epithelial morphogenesis, integrity, and homeostasis are incompletely understood. Protease-activated receptor 2 (Par2), the Par2-activating membrane-tethered protease matriptase, and its inhibitor, hepatocyte activator ...
Balouch, Eaman   +8 more
core   +1 more source

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