T Dependent & T Independent Antigens definitions Flashcards

The process by which B cells become activated to respond to antigens, involving either T dependent or T independent pathways.

Antigens that require helper T cells for B cell activation, involving a multi-step process including antigen presentation on MHC class II.

Antigens capable of activating B cells without helper T cells, often long polysaccharides with repeating subunits.

Immune cells that assist in the activation of B cells by recognizing antigens presented on MHC class II molecules.

Inactive B cells that have not yet encountered an antigen and require activation to respond to pathogens.

Molecules on B cell surfaces that bind to specific antigens, initiating the activation process.

Proteins on B cell surfaces that present processed antigen fragments to helper T cells for recognition.

Signaling molecules released by helper T cells to activate B cells during immune responses.

Differentiated B cells that secrete antibodies to neutralize pathogens.

B cells that remain after an infection to provide a faster response upon re-exposure to the same antigen.

Long carbohydrate molecules with repeating subunits, often forming T independent antigens.

The body's defense mechanism against pathogens, involving B cell activation and antibody production.

Microorganisms that cause disease, targeted by the immune system through B cell activation.

Proteins produced by plasma cells that bind to antigens to neutralize or mark them for destruction.

Molecules on T cells that recognize antigens presented by MHC class II molecules on B cells.