Imtroduction-
Histology is the study of the details of the biological cells or tissues in a specimen prepared by histological technique and by using electron or light microscope.
It plays an important role in the fields of verternary,medicine,etc
The word histology is derived from the greek word where histo means tissue and logy means study.therefore histology is the study of the tissues.therefore the person who performs histology by a framed set of procedures is called as a histologist.
Histology is the scientific study of biological tissues.
Histology is done by taking thin sections of the tissue to be examined.to provide assistance and enhance the accuracy of the study various histological stains are used.
Procedure-
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24. Movat's Pentachrome Stain - can be used to study connective tissue.
25. Mucicarmine - a very specific Mucin Stain
- can be used to observe epithelial mucins
26. Mucin Stains - a category of histology stains generally used to indicate one or more types of mucopolysaccharide substances in tissues.
26. Myloperoxidase (MPO) - can help identify cytoplasmic granules characteristic of myeloid cells (i.e.leukocytes that are not lymphocytes).
- can be used to screen peripheral blood samples for indications of myelogenous leukemia, a cancer of the white bllod cells.
27. Nissl Stains - are basic dyes
- can be used to stain RNA and DNA
- can be used to see Nissl bodies (which are also known as "Nissl granules" and as "tigroid bodies") in neurons.
28. Nuclear Fast Red - can be used to stain cell nuclei red (the cytoplasm will be unstained or yellow)
29. Oil Red O - a fat satain
- can identify neutral lipids and fatty acids in smears and tissues
- fresh smears or cryostat sections of tissue are necessary because fixatives containing alcohols, or routine tissue processing with clearing, will remove
...cap of the sperm pink and the nucleus red, and a picroindigocarmine dye, which turns the mid piece of the sperm blue and the tail of the sperm green. The stained samples would then be placed under a microscope and hopefully spermatozoa would be present so that DNA testing could be performed.
If a larger sample is required, we may make an incision in the skin (open biopsy) and remove a larger section of muscle.
The hyperplasia foci can be seen as early as 2 months, as depicted by the histological picture. The number of cells with hyperplasia is then
amounts and how to analyze the specimine using gel electrophoresis. The samples of DNA were
Moreover, I will let the patient become familiar with any instruments such as a speculum, and demonstrate the tools that will be used to obtain tissue samples that would be used during the examination. Explaining the procedure is also a significant step; this will allow the patient have a sense of control during the examination as we ask and answer questions about their current state, that would help disseminate any concern they may have. Meanwhile, they can learn about what may happen, related to any body sensations or feelings they can experience during the procedure, all while the provider continues to develop rapport and patient’s trust
the gain or loss of water when samples of the tissue are placed in a
Osman, Tagwa. "Detection of Cytomorphological Changes in Oral Mucosa." NCBI. U.S. National Library of Medicine, 26 Sept. 2011. Web. 19 Nov. 2013.
Though our knowledge of the human body has developed drastically, there will always be more to learn, especially in the field of pathology. In addition to education, this procedure is also used to improve the quality of care that healthcare workers provide for their patients, especially in terms of undetermined diagnoses. Post mortem examinations can help to better identify pathologies, and allow a “hands on” approach that cannot be obtained readily.
There are three different types of granular leukocytes. Neutrophil is a phagocyte, produced in the bone marrow that ingests and destroys bacteria extremely fast. Neutrophil has a diameter, which is, about ten to twelve micrometers long. They make up about 60-70 percent of the total number of white blood cells in our body. Eosinphil is a type of white blood cell that secretes poisonous materials in order to kill parasites, allergies and phagocytosis of bacteria, which is when the...
The study of cells is not limited to describing structures. A central concept in modern cytology is that each structure has a function that may be understood as a series of biochemical reactions. The understanding of these functions has been greatly aided by the development of cell fractionation techniques, using an ultracentrifuge to separate specific intracellular structures from the rest of the cell. Another technique is tissue culture, by which specific kinds of cells can be isolated and grown for study.
...ifiable in any patient with the disease, and provides special information associated with staging or anatomic disease extent. The other attribute that make the antigen an ideal tumor cell maker include the fact that it permits for earlier identification of treatment failure resulting in early salvage treatment.
There are three simple tissues namely, parenchyma, collenchyma, and sclerenchyma. Parenchyma is thought of as the ground tissue of an axis since it occurs in greatest abundance and is the tissue in which the vascular tissues are embedded. Parenchyma cells may be isodiametric in both the pith and the cortex, but are more mostly longitudinally elongated in the cortex. They have comparatively thin walls. Wall layers are continuously shaped regions. These simple pits usually occur opposite each other, forming pit-pairs in the walls of contiguous cells. Plasmodesmata (specialized strands of endoplasmic reticulum) form interconnections with the protoplasts of adjacent living cells through simple
In 1849, he completed his studies of cell growth and reproduction of their division into two cells. He concluded that every cell comes from an already existing cell. A prolific writer, his scientific writings alone crossed 2,000 in number. Among his books, “Cellular Pathology” was published in 1858 and is regarded as the root of modern pathology. This work also popularised the third dictum in cell theory: “All cells come from cells”. Virchow was the first to precisely describe and give names of diseases such as leukemia, chordoma, ochronosis, embolism, and thrombosis. He also coined scientific terms, chromatin, agenesis, parenchyma, osteoid, amyloid degeneration, and spina
my check off sheet with the hematology supervisor. One of the first things I learned was