<P> Antigen presenting cells present antigens in the form of peptides on histocompatibility molecules . The T cell / T lymphocyte ( a subtype of white blood cell ) , of the adaptive immune system , selectively recognize the antigens . Depending on the antigen and the type of the histocompatibility molecule , different types of T cells will be activated . For T - Cell Receptor ( TCR ) recognition , the peptide must be processed into small fragments inside the cell and presented by a major histocompatibility complex ( MHC ) . The antigen can not elicit the immune response without the help of an immunologic adjuvant . Similarly , the adjuvant component of vaccines plays an essential role in the activation of the innate immune system . </P>
<P> Antigen presenting cells present antigens in the form of peptides on histocompatibility molecules . The T cell / T lymphocyte ( a subtype of white blood cell ) , of the adaptive immune system , selectively recognize the antigens . Depending on the antigen and the type of the histocompatibility molecule , different types of T cells will be activated . For T - Cell Receptor ( TCR ) recognition , the peptide must be processed into small fragments inside the cell and presented by a major histocompatibility complex ( MHC ) . The antigen can not elicit the immune response without the help of an immunologic adjuvant . Similarly , the adjuvant component of vaccines plays an essential role in the activation of the innate immune system . </P>
recognition proteins are used by white blood cells for what purpose
recognition proteins are used by white blood cells for what purpose
activation of the innate immune system
activation of the innate immune system