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Echinocyte (from the Greek word echinos, meaning 'hedgehog' or 'sea urchin'), in human biology and medicine, refers to a form of red blood cell that has an abnormal cell membrane characterized by many small, evenly spaced thorny projections. [1] [2] A more common term for these cells is burr cells.
[7] [12] Burr cells usually imply uremia, but are seen in many conditions, including mild hemolysis in hypomagnesemia and hypophosphatemia, hemolytic anemia in long-distance runners, and pyruvate kinase deficiency. [11] Burr cells can also arise in vitro due to elevated pH, blood storage, ATP depletion, calcium accumulation, and contact with ...
Most red blood cells are released into the blood as reticulocytes. Polychromasia occurs when the immature reticulocytes of the bone marrow are released, resulting in a grayish blue color of the cells. This color is seen because of the ribosomes still left on the immature blood cells, which are not found on mature red blood cells.
Blood is normally sterile. [1] The presence of bacteria in the blood is termed bacteremia, and the presence of fungi is called fungemia. [2] Minor damage to the skin [3] or mucous membranes, which can occur in situations like toothbrushing or defecation, [4] [5] can introduce bacteria into the bloodstream, but this bacteremia is normally transient and is rarely detected in cultures because the ...
A degmacyte or bite cell is an abnormally shaped mature red blood cell with one or more semicircular portions removed from the cell margin, known as "bites". [1] [2] These "bites" result from the mechanical removal of denatured hemoglobin during splenic filtration as red cells attempt to migrate through endothelial slits from splenic cords into the splenic sinuses. [3]
So, the presence of rouleaux can also be a cause of disease because it will restrict the flow of blood throughout the body because capillaries can only accept free-flowing singular and independent red blood cells. The aggregations, also known as "clumping," may also form as an allergic reaction to certain antibiotics and not necessarily because ...
Bill Burr joined Bill Maher’s “Club Random” podcast and declared cancel culture is over, while Maher once again doubled down in disbelief about how Louis C.K. remains on the outs in Hollywood.
Codocytes, also known as target cells, are red blood cells that have the appearance of a shooting target with a bullseye. In optical microscopy these cells appear to have a dark center (a central, hemoglobinized area) surrounded by a white ring (an area of relative pallor), followed by dark outer (peripheral) second ring containing a band of ...