| Hly | Haemolysin |
|---|---|
| HlyA | Haemolysin |
| HBL | Haemolysin BL |
| TRH | TDH)-related haemolysin |
| TDH | Thermostable direct haemolysin |
| haemolysin | <protein> Bacterial exotoxins that can lyse erythrocytes. (18 Nov 1997) |
|---|---|
| haemolysin factors | Plasmids controlling the synthesis of haemolysin by bacteria. (12 Dec 1998) |
| haemolysinogen | The antigenic material in red blood cells that stimulates the formation of haemolysin. (05 Mar 2000) |
| haemolysins | Substances, usually of biological origin, that destroy blood cells; they may be antibodies or other immunologic factors, toxins, enzymes, etc.; haemotoxins are toxic to blood in general, including the clotting mechanism; haematotoxins may refer to the haematopoietic system. (12 Dec 1998) |
| a haemolysin | See: a' haemolysis. (05 Mar 2000) |
|---|---|
| b haemolysin | See: b haemolysis. Bacterial haemolysin, any haemolytic agent elaborated by various species of bacteria, or by certain strains within a species. (05 Mar 2000) |
| warm-cold haemolysin | Haemolysin which combines with red blood cells at temperatures below 20°C and are eluted at warmer temperatures, e.g., 30 to 37°C. See: Donath-Landsteiner cold autoantibody, haemagglutinating cold autoantibody. (05 Mar 2000) |
| cold haemolysin | An autoantibody of the IgG class responsible for paroxysmal cold haemoglobinuria; it is adsorbed to red cells only at temperatures of 20°C or lower, causing the red cells to lyse in the presence of complement at higher temperatures; it has only slight agglutinating properties in spite of its marked lytic activity, and has a specificity within the blood group P; it is also occasionally present for short periods of time following measles and other infections, and formerly was frequently associated with syphilis. Synonym: cold haemolysin. (05 Mar 2000) |
| heterophil haemolysin | A sensitizing antibody that can combine with red blood cells of various species (in addition to those used as the antigen in stimulating the formation of the haemolysin), resulting in haemolysis when the proper amount of complement is present. (05 Mar 2000) |
| specific haemolysin | A sensitizing, complement-fixing, haemolytic antibody that reacts totally or completely with red blood cells of the antigenic type used to stimulate the formation of the haemolysin. (05 Mar 2000) |
| natural haemolysin | Haemolysin occurring in the plasma of an animal of one species, e.g., a dog, which fixes complement with the red blood cells of some other species, e.g., a rabbit, thereby causing haemolysis of the cells of the rabbit, although the dog was not previously exposed to antigenic stimulation with such cells. (05 Mar 2000) |
| immune haemolysin | A sensitizing, complement-fixing, haemolytic antibody formed in an animal as the result of parenteral administration of red blood cells or whole blood from another species; immune haemolysin may also be formed in human beings who are transfused with human blood that is antigenic in the recipient, e.g., the formation of anti-Rh antibody in an Rh-negative person who is treated with Rh-positive red blood cells. (05 Mar 2000) |
| haemolysin | any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin |
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