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haemagglutinin

British  
/ ˌhiːməˈɡluːtɪnɪn, ˌhɛm- /

noun

  1. an antibody that causes the clumping of red blood cells

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Flu viruses are composed of eight segments, including the haemagglutinin protein, or “H” part of the virus, and neuraminidase, or the “N” part.

From Los Angeles Times ● Jan. 28, 2025

The extent of haemagglutinin variability means that poor strain selection can leave recipients largely unprotected — and even a good vaccine offers limited protection against future strains.

From Nature ● Sep. 17, 2019

In 1983, Palese and his colleagues determined that the haemagglutinin stalk domain is so similar between strains that antibodies can recognize specific physical features, known as epitopes, of haemagglutinin proteins from multiple influenza subtypes.

From Nature ● Sep. 17, 2019

They isolated an antibody - called FI6 - which targeted a protein found on the surface of all influenza A viruses called haemagglutinin.

From BBC ● Jul. 29, 2011

When someone is infected with the flu virus, their antibodies target the virus' haemagglutinin protein, the researchers explained in their study, which was published on Thursday in the journal Science.

From Reuters ● Jul. 28, 2011

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