Immunology — Flashcards

Flashcard 81: _____ T cells migrate preferentially to respiratory organs, skin, and peritoneal cavity

Answer: Gamma-delta

Flashcard 82: Which type of TCR recognizes antigens without the requirement of MHC?

Answer: γδ (Gamma-delta) T cells

Extra: Most T cells are αβ T cells which require MHC-restricted antigen presentation. In contrast, γδ T cells (Gamma-delta T cells) can recognize antigens (including non-peptide antigens like lipids and phosphoantigens) directly without the requirement for MHC molecules.

Flashcard 83: The antigenic part of contact with the T-cell receptor is called _____.

Answer: epitope

Flashcard 84: An immune ring (Wesseley) may be seen around the fungal  ulcer due to deposition of the _____

Answer: immune complexes

Flashcard 85: Which T-cells are important defense mechanisms against microorganisms like Listeria monocytogenes and Mycobacterium tuberculosis?_____

Answer: NK-T cells

Flashcard 86: Which antibody is mainly responsible for agglutination?_____

Answer: IgM

Flashcard 87: _____ immunity occurs when transfer factor is given.

Answer: Adoptive

Flashcard 88: Which antibodies serve as recognition receptors for antigens on naive B cells?

Answer: IgM and IgD

Extra: Surface IgM and IgD serve as the B-cell receptors (BCR) on naive B cells for antigen recognition.

Flashcard 89: The part of the antigen associated with MHC molecule on the antigen-presenting cell is called as _____

Answer: aggretope

Flashcard 90: Which interleukins stimulate proliferation of natural killer cells?_____

Answer: IL-2 and IL-15