1. Chapter Immune system

2. 1. Components
1)  Cells

3. ① Lymphocyte: a. T-lymphocytes:
cytotoxic T cell: Tc C- kill the tumor cell, virus infective cell and foreign cell
helper T cell: Th C- promotes activity of BLC and Tc C
suppressor T cell: Ts C –regulate the function of BLC and TC
b. B-lymphocytes: become into plasma cell
c. NK cell: counteract virus infective cell and tumor cell

4. ②Plasma cell
③antigen presenting cell:
a. dendritic cell:
Blood DC
Langerhans cell
interstitial cell
veiled cell
interdigitating cell
b.macrophage:
Mononuclear phagocytic
system

5. ④other cells:
granulated cell
mast cell
blood platelet
blood-borne stem cell
*Function:
i.      immunologic defence function
ii.     immune surveillance function
iii.    immune homeostasis

6. 2)     Lymphoid tissue
---reticular T:
reticular cell: stellate-shaped with processes to form network
reticular fiber
---lymphocytes, macrophage,
plasma cell
mast cell

7. a. Diffuse LT:
no clear boundary
mainly consists of TLC
postcapillary venules:
-high endothelial venules
-opening for LC enter LT from blood

8. b. Lymphoid nodule:
spherical or ovoid
have clear boundaries
mainly composed of BLC
germinal center: stained pale
*primary LN → secondary LN

9. 3) Lymphoid organs
Central lymphoid organs:
thymus, bone marrow
developed earlier
blood-borne stem cell comes from yolk sac
microenvironment → proliferation
promoting
send LC to PLO and LT two weeks before borne

10. b. Peripheral lymphoid organs:
lymph node, spleen and palatine tonsil
developed later
LC come from CLO
cell proliferation need antigen stimulating - antigen dependent
place for immune reactions

12. Thanks!