Keyword Analysis & Research: the humoral response a level biology


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What is the humoral immune response?

The humoral immune response involves mainly B cells and takes place in blood and lymph. B cells must be activated by an antigen before they can fight pathogens. This happens in the sequence of events shown in Figure below. First, a B cell encounters its matching antigen and engulfs it.

What are the two types of immune responses?

There are actually two types of immune responses: humoral and cell-mediated. The humoral immune response involves mainly B cells and takes place in blood and lymph. B cells must be activated by an antigen before they can fight pathogens.

What is an inflammatory response?

An inflammatory response begins when a pathogen stimulates an increase in blood flow to the infected area. Blood vessels in that area expand, and white blood cells leak from the vessels to invade the infected tissue. These white blood cells, called phagocytes engulf and destroy bacteria.


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