IMMUNITY. HMIM BLOCK 224. Dr. Shaikh Mujeeb Ahmed Assistant Professor AlMaarefa College. Objectives. General overview of the immune system Different components of innate & acquired immunity. Phases of immune response. What is Immunity ?.
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HMIM BLOCK 224
Dr. ShaikhMujeeb Ahmed
Immunity is the body’s ability to resist or eliminate potentially harmful foreign materials or abnormal cells.
Mechanism of Action of Interferon in Preventing Viral Replication
Series of ~ 20 proteins
Activated by microorganisms
Will coat the microorganisms
phagocytic cells have receptors for C3
Biological active fragments
produce reactive oxygen intermediates
Activate mast cells
After early childhood most new lymphocytes are derived from peripheral lymphocyte colonies rather than from bone marrow
T- memory Cell
B- memory Cell