Blood

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B- lymphocytes • :Development • U.M.C in the bone marrow colony forming cells … lymphoblast . B… .lymphocyte . B • Percentage: 30% .lymphcytes • Types: • B.lymphocytes of humoral immunity. • B.memory cells. • :Life span .3months • Function • 1- Humoral immunity: • When exposed to antigen, they are activated into medium sized lymphocytes. • Some of the active cells are differentiated into plasma cells which produce antibodies. • This is called primary immune response. 2- Secondary response (B memory cells): • Some of the active cells are not changed into plasma cells but remain as memory cells. • When exposed to the same antigen again, they produce more rapid and more extensive humoral immune response. Dr. Amal M. Moustafa, , Department of Histology & Cytology
T. Lymphocytes • Development: • UMC in the bone marrow colony forming cells which migrate to the thymus gland where they develop into T.lymphocytes (thymus dependent). • :Percentage • ٧٠ % of small lymphocytes • :Life span .years • :Types • T. killer cells: produce cytotoxic substances. • T. memory cells • T. helper cells. • T. suppressor cells. • Lymphokines secreting cells. 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: Small Lymphocytes • Percentage: 1
Page 23 and 24: Classification of lymphocytes Devel
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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