Chapter 11 :: Cellular Components of the Cutaneous Immune System Flashcards
A slower but more adaptive arm of the immune system that can respond to near limitless range of pathogens
Adaptive immune system
Recognize peptide antigens in the binding pocket of MHC class II molecules and differentiate into effec- tor subsets that have broader and different immuno- logic functions
Naïve CD4+ T cells
Main mediators of cell-mediated immunity.
TH1 cells
Respond to repeated antigen challenges extremely rap- idly, often within hours of exposure—such as that seen in fixed drug eruptions
Tissue Resident (TRM)
Birbeck granules with tennis racket shape
Express CD207
Langerhans Cells
Have the ability to phagocytize large numbers of pathogens and kill intracellular bacteria
Macrophages
Hallmark cell of acute inflammation secondary to their high mobility and are usually recruited to sites of injury within minutes
Neutrophils
Profound role in all aspects of eosinophil development, and can by produced by both T-cells and mast cells
IL-5