Classified in Biology

Written at on English with a size of 4.05 KB.

***Specific Immune response:
-T lympocytes,cellular(T helpers: T h1 and T h2 , T cytotoxic cells)
• B lymphocytes(humoral) → plasma cells→ IgG, IgM, IgA, IgE, IgD
• Antigen presenting cell: Dendrite /macrophages / B Cells



MHC1 : 
-all nucleated Cells & platlets 
-peptides from protien made inside cell
-CD8+ cytotocix cell recogniztion--------->Class molecules I

-antigen presenting cell
-Class II molecules present exogenous antigens that are first processed in the phagolysosomes.
-CD4+ can recognize peptides presented as a complex with self class II molecules.

***Humoral immune response  ( specific developed)
-Antbodies <------ Plasma cells<--------------B Lymphocyte
- eliminates extracellular microbes & eliminates toxins ( neutralization , opsinization , complement system activation )
-Antibodies : Ig ( AEDGM)

^^T lymphocyte Activation :
-Binding of peptide MHC complex by T cell receptor
-Co stimulatory signal delivered by same APC

^^Cytotoxic cell Require activation :
1- Activation of dendrites
2- presene of CD4T cells

TH2------>+ B cells  to differentiate to plasma cell and produce Ig


^^Cells of immuen granulosum :
1-Epitheliod cells – derived from macrophages :
2-Giant cells – formed by fusion of macrophages
3-Necrosis – caused by lysosomal enzymes released by macrophages or cytotoxic materials as TNF
5-Other cells : can be also plasma cells, neutrophils, eosinophil

^^Granulosum induces:
1-Mycobacterium tuberculosis
2• Treponema pallidum
3• Mycobacterium leprae
4• Yersinia pseudoturbeculosis
5• Echinococcus
6• Foreign body granulom

Entradas relacionadas: