1. Phagocytosis

3. Macrophage lymphocyte
PMNLs Plasma cells
Macrophage lymphocyte
inflammation: seen here are mainly neutrophils, but there are also plasma cells, lymphocytes, and macrophages

4. Cont. Inflammation
GRANULOMA

5. Granuloma:
-It’s a type of chronic specific inflammation, characterized by accumulation of tumor like masses. -types: 1-infective, 2-non-infective.

6. Granuloma: The single tubercle composed of :
1-central necrotic tissue,
2-epithellioid cells,
3-lymphocytes and plasma cells,
4-langhans cell .

8. Tuberculosis
-Tuberculosis , MTB or TB (short for tubercles bacillus) is infectious disease caused by Mycobacterium tuberculosis -It is usually attacks the lungs but can also affect other parts of the body. - It is spread through the air when people who have active MTB infection cough, sneeze, or spit

9. 1- Early T.B in lymph node:
-Pale pink rounded tubercles among blue lymphoid tissue.
-the tubercle is formed of : epithelioid cells, langhans gient cells &lymphocytes.

11. 2- Caseating T.B in LN
-Caseous is a form of biological tissue death. Necrosis (death) Tuberculosis
- it is characterized by acellular pink areas of necrosis surrounded by a granulomatous inflammatory process

12. 3- Chronic fibrocasious T.B in lung:
-large irregular areas of caseation appearing homogenous pink surrounded by tubercles reaction an fibrous tissue.

13. Bilharziasis
-It is a parasite infection by a trematode worm acquired from infested water. Also known as (schistosomiasis). - it is can produce in liver, bladder, and gastrointestinal problems

15. 4- Bilharziasis in rectum:
Bilharzia ova deposited mainly in the submucosa
-ova appear rounded or oval and yllowish refractile shell,degenerated ova are pink , while clascified ova are blue.
-ova are surrounded by macrophages ,plasma cells, esinophils,lymphocytes & foreign body giant cells.

17. 5- Bilharziasis in Urinary Bladder:
-Bilharzia ova deposited mainly in the submucosa with less degree in other layers .
-The ova surrounded by bilharzial rxn

18. 6- Bilharziasis in liver:
Bilharzias ova deposited in the portal tract.
The ova surrounded by bilharzial rxn formed capilleries & new bile ducts.