Results 111 to 120 of about 55,016 (311)

Maturidade do ovário no cascudo Hypostomus strigaticeps (Siluriformes, Loriicaridae) = Ovarian organization and maturity stages of armored catfish Hypostomus strigaticeps (Siluriformes, Loriicaridae)

open access: yesActa Scientiarum: Biological Sciences, 2008
No presente trabalho, foi estudado o desenvolvimento ovariano do cascudo Hypostomus strigaticeps. Foram coletadas 332 fêmeas, em coletas mensais, de julho de 2002 até junho de 2004, no rio Corumbataí, Estado de São Paulo, bacia do Paraná.
Erico Luis Hoshiba Takahashi   +2 more
doaj  

The β integrin modulates serotonin sensitivity via NPxY motifs to regulate egg laying and mechanosensation behaviors in Caenorhabditis elegans

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Integrin is an αβ heterodimeric receptor to the extracellular matrix; its binding to the matrix recruits focal adhesions to two NPxY motifs, the tyrosine phosphorylation sites in the cytoplasmic domain. Studies found that replacing tyrosines (Y) with phenylalanines (F) in the motif of β1 integrin displayed little developmental or ...
Josh Haram Bumm   +7 more
wiley   +1 more source

The arsenic action during the Bufo arenarum gonad development (Anura: bufonidae)

open access: yes, 1991
Bufo arenarum ovulations have been kept in potassium bibasic arsenate from the fertilization until 26mm larva. The gonad in development, in the presence of the toxic, suffers significant alterations in its volume, shape and structure.
Pisanó, Armando, Rengel, Dora
core  

Role of SoxE transcription factors in development and disease

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Sox8, Sox9, and Sox10 arose by multiple rounds of genome duplications from a single SoxE gene in ancestral vertebrates. In this review, we will briefly discuss the molecular structure and function of SoxE transcription factors and their evolutionary origin. We will then discuss their expression, function, and developmental disorders.
Merin Lawrence, Gerhard Schlosser
wiley   +1 more source

Construction of fluorescent transgenic zebrafish Tg(amh:mCherry) and tracer analysis of its gonadal development

open access: yesShanghai Jiaotong Daxue xuebao. Yixue ban
Objective·To establish a transgenic zebrafish line Tg(amh:mCherry) for studying gonadal development and related diseases, and to trace and analyze the developmental process of zebrafish gonads.Methods·A recombinant transgenic expression vector pTol2-amh ...
WU Jing   +5 more
doaj   +1 more source

Stocking density and rearing environment affect external condition, gonad quantity and gonad grade in onshore sea urchin roe enhancement aquaculture

open access: yes, 2020
Stocking density and rearing environment affect external condition, gonad quantity and gonad grade in onshore sea urchin roe enhancement ...
Fletcher Warren-Myers (15905498)   +3 more
core  

Embryonic development of the Mediterranean starfish Hacelia attenuata

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Starfish play essential ecological roles as predators and ecosystem regulators; however, detailed developmental descriptions exist for only a handful of species, none of which are from the Mediterranean Sea. Results In this study, we provide the first full account of the development of the Mediterranean starfish Hacelia attenuata ...
Silvia Caballero‐Mancebo   +3 more
wiley   +1 more source

Goofy/123Cre lineage tracing differentiates olfactory and vomeronasal neurons from GnRH‐1 and terminal nerve neurons during neuronal migration and reveals additional olfactory placode‐derived cells in the brain

open access: yesDevelopmental Dynamics, EarlyView.
Abstract The olfactory placode (OP) generates a broad array of chemosensory neurons in the nasal region, including olfactory sensory neurons, vomeronasal sensory neurons, neurons of the septal organ, and Grueneberg ganglion. During invagination, the OP also generates migratory neuronal populations, including gonadotropin‐releasing hormone‐1 (GnRH‐1 ...
Enrico Amato Jr.   +5 more
wiley   +1 more source

Changes in Gonad Arm Extension and the Evolution of Gonad Morphology in Nematodes

open access: yes, 2006
P. pacificus is a comparative system that compliments C. elegans and is the second model nematode that allows detailed forward genetic and molecular analysis of developmental mechanisms. Like C. elegans, P.
Sommer, R. ; https://orcid.org/   +1 more
core  

Three‐dimensional observation of the muscle–tendon integration process in mouse embryos

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Muscle–tendon integration is a crucial step in the morphogenesis of the vertebrate locomotion system. As the limb muscle and tendon progenitor cells derive from distinct embryonic origin, their integration requires precise mutual positioning.
Ramu Sagasaki   +10 more
wiley   +1 more source

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