Sebaceous glands are a type of gland found in the dermis of the skin. These glands make and secrete sebum, which looks and feels like fat. Too much sebum can make our skin and hair feel greasy. Sebaceous glands can be found all over the body, although most are found on the face and scalp. …
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Basophils are a type of white blood cell (WBC) that play a role in the body’s immune response. They are similar in appearance to mast cells and are known for their large, dark-staining granules in the cytoplasm (body of the cell). Basophils are relatively rare, making up between 0.5% to 1.0% of circulating white blood …
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Antral type mucosa is the thin layer of tissue that lines the antrum, cardia, and pylorus of the stomach. The tissue is made up of different types of cells that produce and secrete various substances, including mucus and hormones which aid in digestion. What does antral type mucosa with chronic gastritis mean? Antral type mucosa …
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Fibrinopurulent exudate is a type of fluid that accumulates at a site of tissue damage or inflammation, which contains a combination of fibrin, inflammatory cells such as neutrophils, and cellular debris. Fibrin is a protein that plays a role in blood clotting, and it can form a mesh-like network that helps to hold the exudate …
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What is squamous epithelium? Squamous epithelium is a thin layer of tissue made up of flat, squamous cells. The squamous epithelium forms a barrier on the surface of an organ that protects the tissue below from injury and infection. Where is squamous epithelium normally found in the body? Squamous epithelium can be found in various …
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Squamous mucosa is a thin layer of tissue that covers the inside surface of the mouth, esophagus, vagina, cervix, and anal canal. It is also found in the respiratory tract, where it lines the nasal cavity, pharynx, larynx, trachea, and bronchi. Squamous mucosa is designed to protect the tissue below from physical injury and infection. …
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CD45, also known as leukocyte common antigen (LCA), is a protein that is expressed on the surface of all hematopoietic cells and their progenitors, except erythrocytes (red blood cells) and platelets. Hematopoietic cells include cells of the immune system, such as B cells, T cells, natural killer (NK) cells, monocytes, and granulocytes. CD45 is a …
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In pathology, columnar mucosa refers to a tissue lined by tall, column-shaped cells with nuclei (the part of the cell that holds the genetic material) located toward the bottom of the cell. These cells are usually taller than they are wide and they contain a substance called mucin. Where is columnar mucosa normally found in …
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AE1/AE3 is a test pathologists use involving a combination of antibodies designed to recognize a group of proteins called cytokeratins. Cytokeratins are proteins found inside epithelial cells, which are the cells that line surfaces inside and outside your body, such as your skin and the lining of internal organs. The AE1/AE3 test helps pathologists identify …
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In pathology, the term degenerative changes describes the microscopic appearance of tissue that has undergone physical breakdown so that it no longer resembles normal healthy tissue. These changes can prevent a tissue or organ from functioning normally. On their own, these changes are not cancerous. However, some tumours (including some cancers) can show these changes …
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