Search results
Results from the WOW.Com Content Network
The early development of microtechnique in botany is closely related to that in zoology. Zoological and botanical discoveries are adopted by both zoologists and botanists. [5] Since Hooke discovered cells, microtechnique had also developed with the emergence of early microscopes. Microtechnique then had advanced over the period of 1800–1875. [6]
Scar tissue is composed of the same protein as the tissue that it replaces, but the fiber composition of the protein is different; instead of a random basketweave formation of the collagen fibers found in normal tissue, in fibrosis the collagen cross-links and forms a pronounced alignment in a single direction. [1]
From there the tissue can be mounted on a microscope slide, stained with appropriate aqueous dye(s) after removal of the paraffin, and examined using a light microscope. [ 12 ] Frozen section procedure : water-rich tissues are hardened by freezing and cut in the frozen state with a freezing microtome or microtome- cryostat ; sections are ...
Damaged sweat and sebaceous glands, hair follicles, muscle cells, and nerves are seldom repaired. They are usually replaced by the fibrous tissue. The result is the formation of an inflexible, fibrous scar tissue. Human skin cells are capable of repairing UV-induced DNA damages by the process of nucleotide excision repair. [2]
Then, a thin piece of tissue is removed circumferentially around the tumour and sectioned with a cryostat microtome. This is followed by tissue processing and viewing under a microscope. If any residual tumour could be identified microscopically, the tumour site could be marked for further tissue removal.
Langerhans cell is represented by a yellow oval; blue arrows correspond to is_a relations, and orange arrows correspond to develops_from relations. Only a subset of Langerhans cell parent types are included in the figure. [1] A Langerhans cell (LC) is a tissue-resident macrophage of the skin [2] once thought to be a resident dendritic cell. [3]
Granulation tissue is composed of tissue matrix supporting a variety of cell types, [3] most of which can be associated with one of the following functions: formation of extracellular matrix; operation of the immune system; vascularisation; An excess of granulation tissue (caro luxurians) is informally referred to as hypergranulation or "proud ...
Pulmonary fibrosis creates scar tissue. The scarring is permanent once it has developed. [29] Slowing the progression and prevention depends on the underlying cause: Treatment options for idiopathic pulmonary fibrosis are very limited, since no current treatment has stopped the progression of the disease.