Results 61 to 70 of about 74,541 (274)

The mammalian yolk sac placenta [PDF]

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2008
AbstractThere are three fetal membranes in mammals, namely the yolk sac, allantois and amnion, but only the first two form a placenta. In Monotremata (monotremes), Marsupialia (marsupials) and Placentalia (eutherians), the yolk sac transfers nutrients originating from uterine glandular secretion or the maternal blood.
Claudia, Freyer, Marilyn B, Renfree
openaire   +2 more sources

Real‐time biosensing of Parkinson's disease biomarkers via NIR‐activated upconversion nanoparticles

BMEMat, EarlyView.
Schematic illustration of the luminescence resonance energy transfer‐driven core‐shell‐shell UCNPs (cssUCNPs@Fluo4) nanoprobe for simultaneous monitoring of Ca²⁺‐temperature dynamics in Parkinson's disease models. Abstract Parkinson's disease (PD) is a progressive neurodegenerative disorder with incompletely understood pathophysiology, necessitating ...
Jialin Liu, Nan Li, Yu Chen, Rui Pu, Wei Wei, Yunqi Lin, Lejing Li, Yao Lu, Jianhua Hao, Lihua Li   +9 more
wiley   +1 more source

The planktonic food web in the Gulf of Naples based on the analysis of carbon and nitrogen stable isotope ratios

Marine Ecology, EarlyView., 2023
Abstract Plankton play a key role in marine food webs by producing and transferring organic matter and energy to higher trophic levels. To define the trophic structure and interactions within the planktonic communities in the Gulf of Naples, we determined carbon and nitrogen stable isotope ratios in particulate organic matter (POM, <20 μm ...
Louise Merquiol, Maria Grazia Mazzocchi, Isabella D'Ambra   +2 more
wiley   +1 more source

Evidence of a dual histogenetic pathway of sacrococcygeal teratomas [PDF]

, 2016
Aims Sacrococcygeal teratomas are rare tumours that occur most frequently in neonates, although adult cases also occur. The molecular pathogenesis of these tumours and their long-term prognosis is uncertain.
Cheng, Liang, Eble, John N., Emerson, Robert E., Fan, Rong, Grignon, David J., Kao, Chia-Sui, Masterson, Timothy A., Roth, Lawrence M., Wang, Mingsheng, Wang, Xiaoyan, Zhang, Shaobo   +10 more
core   +1 more source

Rodent monocyte‐derived macrophages do not express CD163: Comparative analysis using macrophages from living boreoeutherians

Developmental Dynamics, EarlyView.
Abstract Background CD163 is a scavenger receptor predominantly expressed on the surfaces of macrophages in various mammalian species and is a marker of anti‐inflammatory (M2‐like) macrophages. High density of CD163‐positive tumor‐associated macrophages (TAMs) is associated with worse prognosis in various patient tumors.
Yoichi Saito, Yukio Fujiwara, Yasuka L. Yamaguchi, Satomi S. Tanaka, Kyoko Miura, Yoshiyuki Hizukuri, Kyoko Yamashiro, Yasuhiro Hayashi, Yuta Nakashima, Yoshihiro Komohara   +9 more
wiley   +1 more source

Longitudinal volumetric analysis of in ovo compartments in chicken eggs using ultra-high-field magnetic resonance imaging

Frontiers in Veterinary Science
IntroductionThe chicken egg, with its in ovo compartments, is a widely used and popular animal model in experimental studies. This study aimed to quantify the volumes of the yolk/yolk sac, amniotic fluid, and chicken embryo in ovo using non-invasive ...
Felix Streckenbach, Felix Streckenbach, Hanna Schön, Hanna Schön, Julia König, Marcus Frank, Marcus Frank, Inga Langner, Oliver Stachs, Oliver Stachs, Anika Jonitz-Heincke, Anika Jonitz-Heincke, Sönke Langner, Tobias Lindner, Tobias Lindner, Jana Schätzel   +15 more
doaj   +1 more source

Gastric Adenocarcinoma with Yolk Sac Tumor Differentiation and Liver Metastasis of Yolk Sac Tumor Component

Case Reports in Oncological Medicine, 2013
Gastric adenocarcinoma with yolk sac tumor (YST) differentiation has rarely been reported. We report a case of primary gastric adenocarcinoma with yolk sac tumor differentiation and liver metastases of the YST component in a 50-years-old patient.
Chhagan Bihari, Archana Rastogi, K. N. Chandan, Vikas Yadav, Dipanjan Panda   +4 more
doaj   +1 more source

Expression of mutant TIE2 p.L914F during mouse development causes embryonic lethality and defects in vascular remodeling

Developmental Dynamics, EarlyView.
Abstract Background Sporadic venous malformation (VM) is associated with the hyperactivating p.L914F mutation in TIE2, a receptor tyrosine kinase essential for vascular development. This mutation is not found in hereditary VM, suggesting incompatibility with life when expressed during early vascular development.
Lindsay J. Bischoff, Sandra Schrenk, Kara Soroko, Chhiring Sherpa, Ashok Arasu, Damien Reynaud, Elisa Boscolo   +6 more
wiley   +1 more source

Apolipoprotein B-related gene expression and ultrastructural characteristics of lipoprotein secretion in mouse yolk sac during embryonic development

Journal of Lipid Research, 1999
In mice, the yolk sac appears to play a crucial role in nourishing the developing embryo, especially during embryonic days (E) 7–10. Lipoprotein synthesis and secretion may be essential for this function: embryos lacking apolipoprotein (apo) B or ...
Yuko Terasawa, Sylvaine J. Cases, Jinny S. Wong, Haris Jamil, Sumana Jothi, Maret G. Traber, Lester Packer, David A. Gordon, Robert L. Hamilton, Robert V. Farese, Jr.   +9 more
doaj   +1 more source

The effect of static incubation on the yolk sac vasculature of the Japanese quail (Coturnix c. japonica) [PDF]

, 2006
Static incubation affects early embryonic development with, notably, a reduction area vasculosa expansion and diminished sub-embryonic fluid (SEF) volume, effects produced during a ‘critical’ period (3-7 days in the chick) (Baggott et al., 2002).
Baggott, Glenn K., Shapland, F
core