Results 41 to 50 of about 278,838 (191)

Spatial mechanisms of gene regulation in metazoan embryos [PDF]

open access: yes, 1991
The basic characteristics of embryonic process throughout Metazoa are considered with focus on those aspects that provide insight into how cell specification occurs in the initial stages of development.
Davidson, Eric H.
core  

Doubled haploid ramets via embryogenesis of haploid tissue cultures [PDF]

open access: yes, 2010
Tissue culture in the oil palm business is generally concerned with the multiplication (clonal production) of dura, pisifera and tenera palms. These are all normal diploids (2n=2x=36).
Caligari, P. D. S.   +4 more
core  

Foxo3-mediated physiological cell competition ensures robust tissue patterning throughout vertebrate development

open access: yesNature Communications
Unfit cells with defective signalling or gene expression are eliminated through competition with neighbouring cells. However, physiological roles and mechanisms of cell competition in vertebrates remain unclear.
Kanako Matsumoto   +5 more
doaj   +1 more source

Sexual Dimorphism in the Age of Genomics: How, When, Where

open access: yesFrontiers in Cell and Developmental Biology, 2019
In mammals, sex chromosomes start to program autosomal gene expression and epigenetic patterns very soon after fertilization. Yet whether the resulting sex differences are perpetuated throughout development and how they connect to the sex-specific ...
Daniel F. Deegan, Nora Engel
doaj   +1 more source

Thermal effects on cephalopod energy metabolism - A case study for Sepia officinalis [PDF]

open access: yes, 2008
Cephalopods are the largest, most active invertebrates and there is considerable evidence for their convergent evolution with fishes. However, most active cephalopods display standard and active metabolic rates that are several-fold higher than ...
Bock, C.   +5 more
core   +1 more source

Cathepsin D-like activity from embryo of camel tick Hyalomma dromedarii

(Acari: Ixodida)

open access: yesPersian Journal of Acarology
It is well known that cathepsin D (CD) has a fundamental role in the degradation of yolk proteins during embryo development as it has a dual function in embryo feeding and defending against pathogens.
Mohamed S. Helmy   +4 more
doaj   +1 more source

Control of Arabidopsis apical-basal embryo polarity by antagonistic transcription factors. [PDF]

open access: yes, 2010
Plants, similarly to animals, form polarized axes during embryogenesis on which cell differentiation and organ patterning programs are orchestrated. During Arabidopsis embryogenesis, establishment of the shoot and root stem cell populations occurs at ...
Long, Jeff A, Smith, Zachery R
core   +2 more sources

Igf2 pathway dependency of the Trp53 developmental and tumour phenotypes

open access: yesEMBO Molecular Medicine, 2012
Insulin‐like growth factor 2 (IGF2) and the transformation related protein 53 (Trp53) are potent regulators of cell growth and metabolism in development and cancer. In vitro evidence suggests several mechanistic pathway interactions.
Victoria L. Haley   +8 more
doaj   +1 more source

Effects of neratinib on angiogenesis and the early stage of the embryo using chicken embryo as a model

open access: yesBiomolecules & Biomedicine, 2023
Angiogenesis is the process of forming new blood capillaries from pre-existing vessels. Even though it is essential during normal development, it plays a major role in cancer progression.
Hadeel Kheraldine   +5 more
doaj   +1 more source

The effect of salinity on transovarial transmission of a microsporidian infecting Gammarus duebeni [PDF]

open access: yes, 1997
This is an investigation of the impact of salinity on transovarial transmission and burden of a microsporidian sex ratio distorter in the inter-tidal crustacean Gammarus duebeni.
Dunn, A.M., Hatcher, M.J.
core   +1 more source

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