He found that the infection was controlled well before an effective killer T cell response was generated. Hepatitis A virus growth was instead controlled by CD4+ T helper cells, a different type ...

It quickly became apparent that killer T cells play a crucial role in fighting the virus in the body by killing off infected cells. However, it was not entirely clear how the immune system manages ...

CD4+ T cells, or helper T cells, are one type of lymphocyte that helps coordinate the immune response against infection and disease. They interact and activate other cells in the immune system.

Some, known as dendritic cells, take up proteins from foreign pathogens, chop them up into peptides called antigens, and display them on their surface. Another group, known as helper T cells, inspects ...

one cytotoxic ("killer") T cell, and one helper T cell. These cells aren't rare or unusual, immunologically speaking. They're the standard actors described in any immunology textbook. But up until ...

The maturation and differentiation of naive T cells into helper or killer T cells are dependent on the binding specificity of MHC proteins to external antigens. Cell-mediated immunity is activated ...

Follicular T-helper cells are a distinct population of CD4-positive T cells found in the B cell follicles of secondary lymphoid organs. They are identified by their constant expression of the B ...