Search results
Results From The WOW.Com Content Network
Histopathology (compound of three Greek words: ἱστός histos 'tissue', πάθος pathos 'suffering', and -λογία-logia 'study of') is the microscopic examination of tissue in order to study the manifestations of disease.
[2] [4] Hirano bodies are often described as rod-shaped, crystal-like, and eosinophilic (pink after staining with haematoxylin and eosin). They are frequently seen in hippocampal pyramidal cells. [5] An experimental model of Hirano body formation has been reported, using a genetically altered strain of the slime mold Dictyostelium discoideum. [6]
In the 19th century histology was an academic discipline in its own right. The French anatomist Xavier Bichat introduced the concept of tissue in anatomy in 1801, [23] and the term "histology" (German: Histologie), coined to denote the "study of tissues", first appeared in a book by Karl Meyer in 1819.
[2] [better source needed] There are two main kinds of Lewy bodies – classical and cortical. A classical Lewy body is an eosinophilic cytoplasmic inclusion consisting of a dense core surrounded by a halo of 10 nm wide radiating fibrils , the primary structural component of which is alpha-synuclein (α-synuclein).
[1] Anatomical pathology is one of two branches of pathology, the other being clinical pathology, the diagnosis of disease through the laboratory analysis of bodily fluids or tissues. Often, pathologists practice both anatomical and clinical pathology, a combination known as general pathology. [2] Similar specialties exist in veterinary pathology.
Corpora arenacea (singular: corpus arenaceum, [1] also called brain sand or acervuli [2] [3] or psammoma bodies [4] or pineal concretions [4]) are calcified structures in the pineal gland and other areas of the brain such as the choroid plexus. Older organisms have numerous corpora arenacea, whose function, if any, is unknown.
More T cells in these areas, and in the space adjacent to blood vessels. Recently demyelinated tissue: Tissues were full of myelin-containing phagocytes. Signs of early remyelination together with small numbers of oligodendrocytes. Large numbers of T cells, B cells, and other immune cells concentrated around blood vessels.
Brain cells make up the functional tissue of the brain. The rest of the brain tissue is the structural stroma that includes connective tissue such as the meninges , blood vessels , and ducts. The two main types of cells in the brain are neurons , also known as nerve cells, and glial cells , also known as neuroglia. [ 1 ]