Blood

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T. Lymphocytes Function: • • Cell mediated immunity:- • When exposed to cellular antigen, the T-lymphocytes are activated and come in contact with the antigen. • They secrete cytotoxic substance to destroy it. • Graft rejection cells in organ transplantation: • .(by cell mediated immunity) • T-memory cells: • Some of the activated T-cells remain in the body as memory cells, that can attack the same antigen after a long period of time. • T-helper cells:- • T-lymphocytes, can help the B-lymphocytes to be activated by the antigen. • .٥ Se cretion of lymphokines: • Interferon: antiviral. • Colony stimulating factor: stimulate bone marrow cells. • Macrophage factor: antibacterial. • ٦ . They act as macrophage attracting cells . Dr. Amal M. Moustafa, , Department of Histology & Cytology
Classification of lymphocytes Development: Percentage : Life span Function : Types : B. lymphocytes In bone marrow 30% ٣months Humoral immunity T. lymphocytes In the thymus ٧٠ % years Cell mediated immunity Dr. Amal M. Moustafa, , Department of Histology & Cytology
Page 1 and 2: Dr. Amal M. Moustafa, , Department
Page 3 and 4: The Blood Dr. Amal M. Moustafa, , D
Page 5 and 6: The Blood Cells Dr. Amal M. Moustaf
Page 7 and 8: C- Colour:- • Fresh, single RBC i
Page 9 and 10: LEUCOCYTES (WBCS) • - :Definition
Page 11 and 12: Neutrophils (leucocytes polymorphon
Page 13 and 14: Function:- • Defense against micr
Page 15 and 16: Function:- 1-In allergic conditions
Page 17 and 18: Lymphocytes Non granular leucocytes
Page 19 and 20: Small Lymphocytes • Percentage: 1
Page 21: T. Lymphocytes • Development: •
Page 25 and 26: PLATELETS (THROMBOCYTES) Dr. Amal M
Page 27 and 28: E/M: 1-Cell membrane:- Irregular an
Page 29 and 30: Number RBCs Neutrophils Anaemia or
Page 31 and 32: • Neutropenia: • It is a decrea
Page 35 and 36: PLATELETS RBCs Dr. Amal M. Moustafa
Page 41: Dr. Amal M. Moustafa, , Department

Blood

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