Introduction to Adaptive Immunity definitions Flashcards

A specialized defense mechanism targeting specific pathogens, evolving over time for improved response.

Targets intracellular pathogens using T cells, crucial for combating infections within host cells.

Targets extracellular pathogens using B cells and antibodies, addressing threats outside host cells.

Lymphocytes involved in cell-mediated immunity, using TCRs to recognize specific antigens.

Lymphocytes involved in humoral immunity, using BCRs to recognize antigens and produce antibodies.

Proteins secreted by plasma cells, binding to specific antigens to neutralize or mark them for destruction.

Sites where immature lymphocytes develop into naive forms, including the thymus and bone marrow.

Sites where naive lymphocytes become activated, including lymph nodes, spleen, and tonsils.

Primary lymphoid organ where T cells fully develop, located above the heart.

Primary lymphoid organ where B cells fully develop, also the initial production site for T cells.

Inactive T and B cells that have not yet encountered their specific antigen.

Membrane proteins on T cells that recognize specific antigens to initiate immune responses.

Membrane proteins on B cells that recognize specific antigens, resembling antibodies they release.

Long-lived cells that provide a rapid response upon re-exposure to a previously encountered antigen.

Cells like dendritic cells that present antigens to T cells, crucial for their activation.