Αποτελέσματα Αναζήτησης
30 Οκτ 2023 · This article will review the embryology of the bone marrow as well as its histology. Additionally, the constituent cell lineages and their function will be discussed, together with clinically relevant processes and pathologies.
The focus of this article will be evaluation of the bone marrow with the objectives of reviewing of some concepts regarding the bone marrow structure and function and review of qualitative and quantitative bone marrow evaluation methods.
24 Ιαν 2024 · The esophagus has a histological structure typical of the digestive system. The inner mucosa consists of a multilayered, nonkeratinized squamous epithelium . This special epithelial layer protects the esophagus from mechanical wear and tear caused by the food bolus during swallowing.
The bone marrow consists of (1) hematopoietic stem cells, pluripotent cells capable of self-renewal; (2) progenitor cells that evolve into more differentiated cells with each cell division; (3) precursor cells that can be identified by light microscopy (not shown, see Fig. 13-3); and (4) mature hematopoietic cells awaiting release into the ...
Cells generally regarded as endocrine cells are those which are conspicuously specialized for this function. The gastrointestinal system has two classes of such cells, the islets of Langerhans in the pancreas and the enteroendocrine cells in the mucosal epithelium of the stomach and intestine.
The bone marrow is the ∼ major hematopoietic organ, and a primary lymphoid tissue, responsible for the production of erythrocytes, granulocytes, monocytes, lymphocytes and platelets.
In decalcified, paraffin-embedded, hematoxylin and eosin (H&E)-stained sections of bone marrow, the more mature stages of the erythroid and myeloid cells, adipocytes, mast cells, and megakaryocytes can be identified, but lymphoid cells as well as immature progenitor cells can not be reliably identified.
