A gastric antral tumor histologically classified as a yolk sac carcinoma was studied immunohistochemically. The tumor contained immunoreactive alpha-fetoprotein and gastrin. This is the first yolk sac carcinoma in which neuroendocrine differentiation was demonstrated immunohistochemically.
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http://dx.doi.org/10.1016/0046-8177(93)90146-8 | DOI Listing |
N Biotechnol
January 2025
Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China. Electronic address:
Primordial germ cells (PGCs) are the first germline stem cells to emerge during early embryonic development and are essential for the propagation and survival of species. Genome editing creates mutagenesis possibilities in vivo, but the generation of precise mutations in PGCs is still challenging. Here, we report an optimized approach for highly efficient genome editing via introducing biallelic variations in early embryos in zebrafish.
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December 2024
Kidang Marine Science Institute, Jeju National University, Jeju 63333, Korea.
This study investigated the progressive morphological alterations and digestive tract development in larval and juvenile red spotted grouper, across growth stages. External shape observations were made using an optical microscope, and the development of the digestive tract was investigated using histological methods. At 1 day after hatching (DAH), the digestive tract appeared as a straight tube extending between the ventral side and yolk-sac.
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January 2025
Department of Neuroscience, Del Monte Institute for Neuroscience, University of Rochester, Rochester, NY 14642, USA; Center for Visual Science, University of Rochester, Rochester, NY 14642, USA. Electronic address:
Microglia, the resident macrophages of the brain, are derived from the yolk sac and colonize the brain before the blood-brain barrier forms. Once established, they expand locally and require Colony-stimulating-factor-1 receptor (CSF1R) signaling for their development and maintenance. CSF1R inhibitors have been used extensively to deplete microglia in the healthy and diseased brain.
View Article and Find Full Text PDFJ Hazard Mater
January 2025
Shanxi Key Laboratory of Coal-based Emerging Pollutant Identification and Risk Control, Research Center of Environment and Health, College of Environment and Resource, Shanxi University, Taiyuan 030006, China. Electronic address:
Fine particulate matter (PM) is one of the most concerning air pollutants, with emerging evidence indicating that it can negatively impact embryonic development and lead to adverse birth outcomes. Hematopoiesis is a critical process essential for the survival and normal development of the embryo, consisting of three temporally overlapping stages and involving multiple hematopoietic loci, including the yolk sac and fetal liver. Therefore, we hypothesized that abnormal embryonic hematopoietic development can significantly influence developmental outcomes.
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January 2025
Turku Bioscience Centre, University of Turku and Åbo Akademi University, 20520 Turku, Finland; Institute of Biomedicine, University of Turku, 20520 Turku, Finland; InFLAMES Research Flagship Center, University of Turku, 20520 Turku, Finland. Electronic address:
The pituitary gland is the central endocrine regulatory organ producing and releasing hormones that coordinate major body functions. The physical location of the pituitary gland at the base of the brain, though outside the protective blood-brain barrier, leads to an unexplored special immune environment. Using single-cell transcriptomics, fate mapping, and imaging, we characterize pituitary-resident macrophages (pitMØs), revealing their heterogeneity and spatial specialization.
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