Thymus
Incompatible blood transfusion
Cytotoxic cells (Tc)
IgE antibody
Antigen fragments+MHC-II
Lacteal
IgA antibody
Antigen fragments+MHC-I
Spleen
Natural Killer cells and Phagocytes
Lymphoid nodules
Antigen-Presenting Cells (APC)
Lymph node
Lymph
Immune complex reactions of allergy triggered by soluble antigens
Primary lymphoid organs
Plasma cells
Larger in size in infants, smaller in adults
Kills infected and defective cells by perforin and Granzyme
Cells become immunocompetent here eg., Bone marrow and Thymus
Recognized via CD8 co-receptor of Tc cells
Present in external secretions
Also called mucosa-associated lymphoid tissue (MALT) eg Tonsils, Peyer's patches
Part of 2nd line of Innate defense
A lymphatic capillary in small intestine that transport digested fat from intestine to the blood
Example of type II allergy
Produces antibodies
Example of type III allergy
Recognized via CD4 co-receptor of Th cells
Includes the Dendritic cells, Macrophages and B cells
Contains white and red pulp
Associated with allergy/hypersensitivity
Sites where antigens encounter antibodies and T cells
Interstitial fluid that drains out via lymphatic capillaries