hemagglutination

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hemagglutination

A scientist observes hemagglutination in a laboratory plate.

Definition
  1. Noun:
    • The clumping together of red blood cells: Hemagglutination is a specific biological process where red blood cells (erythrocytes) agglutinate, or clump together. This reaction is often caused by the presence of specific antibodies, viruses, or other agglutinating agents that bind to antigens on the surface of the red blood cells.
Usage Examples
  • Noun:
    • The laboratory test confirmed the infection by demonstrating hemagglutination in the sample.
    • Influenza viruses can cause hemagglutination, which is the basis for some diagnostic tests.
    • The scientist observed hemagglutination under the microscope, indicating a positive reaction.
Advanced Usage
  • "Hemagglutination inhibition" (HI): A related laboratory technique used to measure the titer of antibodies in a serum sample by its ability to inhibit (prevent) the hemagglutination caused by a virus or other agent.
    • The hemagglutination inhibition assay is a standard method for determining immunity to certain viral strains.
Variants and Related Words
  • Hemagglutinin (n): A substance, such as a viral protein or an antibody, that causes hemagglutination.
    • The influenza virus has a surface protein called hemagglutinin that facilitates entry into host cells and causes red blood cell clumping.
  • Agglutination (n): The broader process of clumping together of cells or particles, often used in the context of bacteria or red blood cells.
  • Hemagglutinate (v): The verb form meaning to cause or undergo hemagglutination.
    • Certain viruses hemagglutinate red blood cells from specific species.
Synonyms
  • Red cell agglutination: A more descriptive synonym.
  • Erythrocyte agglutination: A technical synonym using the formal term for red blood cells.
Related Phrases and Terms
  • Hemagglutination assay: A test or procedure designed to detect or measure hemagglutination.
    • The viral titer was determined using a hemagglutination assay.
  • Passive hemagglutination: A technique where red blood cells are coated with an antigen to detect specific antibodies.
  • Reverse passive hemagglutination: A technique where red blood cells are coated with an antibody to detect specific antigens.
hemagglutination

A scientist observes hemagglutination in a laboratory plate.

Noun
  1. agglutination of red blood cells

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