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The process of formation of red blood cells, from the stem to the mature cell, includes many intermediate stages. One of them is reticulocytes - the immediate precursors of full-fledged red blood cells. The difference between them lies only in the presence ...

Ovarian insufficiency is a pathological condition characteristic of women of childbearing age, which is based on a violation of the ovulatory function of the follicles. Most often, the pathology is manifested by the syndrome of depleted ovaries or ...

Hepatitis C is one of the most severe viral liver diseases. Its severity is due to the latent course and adverse consequences and prognosis after infection. The most common route of infection is hematogenous: After medical procedures, including dental ...

Calcium is one of the most important and most abundant chemical elements in the body. Calcium is found in bones, muscles, nerve cells, endocrine glands, excretory organs, the blood system and other tissues, which indicates the enormous biological role of ...

Amylase is an enzyme involved in the metabolism of carbohydrates, breaking down their polymeric forms (starch) to disaccharides and monosaccharides. It is produced by the cells of the external secretion of the salivary and pancreas, therefore, the main ...

Viral hepatitis-B is a severe infectious pathology in which the liver is the target. After entering the body, the virus is introduced into hepatocytes, with their help it multiplies and thus increases its pool. When a certain concentration is reached, the ...

To establish group affiliation, the AB0 system is used, the essence of which is the presence or absence of special molecules on erythrocytes (red blood cells that carry oxygen) and in the serum - antigens and antibodies, respectively: The first (0, zero) - ...