Results 151 to 160 of about 1,025,832 (207)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Breast cancer is a neoplastic disease with high prevalence among women. Radiotherapy is one of the principal treatment modalities for this disease, but it poses significant challenges. This study aimed to compare and evaluate the technical and dosimetric performance of conventional C‐arm linac systems and a new design, Halcyon, in the ...
Mustafa Çağlar +8 more
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Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background Tumor segmentation is crucial for lung disease diagnosis and treatment. Most existing deep learning‐based automatic segmentation methods rely on manually annotated data for network training. Purpose This study aims to develop an unsupervised tumor segmentation network smic‐GAN by using a similarity‐driven generative adversarial ...
Chengyijue Fang +2 more
wiley +1 more source
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1995
B-cell develop their B-cell receptor (BCR) via transient formation of surrogate L-chain/p55 complexes.
H.-Harald Sedlacek, Tarik Möröy
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B-cell develop their B-cell receptor (BCR) via transient formation of surrogate L-chain/p55 complexes.
H.-Harald Sedlacek, Tarik Möröy
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1987
All lymphocytes are derived from an unidentified multipotent precursor (Fig. 10.1). T cell precursors migrate from the liver and bone marrow in fetal life and from the bone marrow in adult life, to the thymus. It is unknown whether the stem cells become committed to T cell differentiation before or after they have entered the thymus.
Anthony S-Y. Leong, Ian J. Forbes
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All lymphocytes are derived from an unidentified multipotent precursor (Fig. 10.1). T cell precursors migrate from the liver and bone marrow in fetal life and from the bone marrow in adult life, to the thymus. It is unknown whether the stem cells become committed to T cell differentiation before or after they have entered the thymus.
Anthony S-Y. Leong, Ian J. Forbes
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Osteoblastic cells: Differentiation and trans-differentiation
Archives of Biochemistry and Biophysics, 2008The osteoblast is the bone forming cell and is derived from mesenchymal stem cells (MSC) present among the bone marrow stroma. MSC are capable of multi-lineage differentiation into mesoderm-type cells such as osteoblasts and adipocytes. Understanding the mechanisms underlying osteoblast differentiation from MSC is a central topic in bone biology that ...
Kassem, Moustapha +2 more
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T cell differentiation in the thymus
Cytotechnology, 1991T lymphocytes arise in the thymus and seed to peripheral lymphoid organs as fully functional cells at the time of exit. In humans, the thymus begins to function very early in ontogeny and releases large numbers of T cells before the time of birth. However, the vast majority of developing thymocytes (>95%) die within the thymus as a result of stringent ...
Carlo E. Grossi +3 more
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Extrathymic T cell differentiation
Current Opinion in Immunology, 1995In the mouse, the gut mucosa is a major site of extrathymic differentiation of T cells. Recent data in this past year show that this process differs from the main thymic differentiation pathway not only in its location, but also in its use of costimulatory molecules, signal transduction modules, and mechanisms of repertoire selection. The thymus exerts
Delphine Guy-Grand +2 more
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Cell Differentiation and Malignancy
Cell Biophysics, 1986An understanding of the mechanism that controls growth and differentiation in normal cells would seem to be an essential requirement to elucidate the origin and reversibility of malignancy. For this approach I have mainly used normal and leukemic blood cells, and in most studies have used myeloid blood cells as a model system.
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Science's STKE, 2006
This 3-week-long series of collaborative laboratory exercises explores how to use a cultured cell system (PC12 cells) to study signaling pathways involved in cellular differentiation. The laboratory would be useful in a neurobiology or cell biology course for advanced undergraduate students.
Jay A. Blundon +2 more
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This 3-week-long series of collaborative laboratory exercises explores how to use a cultured cell system (PC12 cells) to study signaling pathways involved in cellular differentiation. The laboratory would be useful in a neurobiology or cell biology course for advanced undergraduate students.
Jay A. Blundon +2 more
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Glycolipids and Cell Differentiation
1980Differentiation of a cultured cell refers generally to a change in the expression of some peculiar functions specific to this cell. Generally differentiation involves only a modification of some biochemical properties of the cell such as synthesis of melanin by melanocytes (KREIDER et al., 1975) or synthesis of collagen by bone fibroblasts (MANNER and ...
Paul Mandel, Jacques Robert, G. Rebel
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