Immune Adaptive

These flashcards cover key vocabulary and concepts from the lecture on the immune system and organ transplantation.

Innate Immune Response

The rapid, nonspecific immune response that does not have memory; includes physical and chemical barriers and immune cells like macrophages and neutrophils.

Adaptive Immune Response

A slower, specific immune response that has memory, characterized by the activation of B and T lymphocytes.

B Cell Receptors (BCRs)

Protein molecules found on the surface of B cells that bind to specific antigens to initiate an immune response.

Cytotoxic T Cells (Tc)

A type of T cell that directly attacks and kills virus-infected or abnormal cells.

Major Histocompatibility Complex (MHC) Proteins

Cell surface proteins that present antigenic peptides to T cells; divided into Class I and Class II.

Antigen Presentation

The process by which antigen-presenting cells display antigens on their surface in conjunction with MHC molecules to activate T cells.

Helper T Cells (TH)

A type of T cell that assists in activating B cells and cytotoxic T cells by secreting cytokines.

Clonal Expansion

The process by which a single lymphocyte divides to produce many identical cells after activation.

Immunosuppressant Drugs

Medications used to reduce the immune response to prevent organ transplant rejection.

Primary Immune Response

The initial response of the immune system to a specific antigen, resulting in the formation of memory cells.