The Complement System: A Decisive System in Body Defence. This article will discuss the complement system's role in the body's defense mechanisms, including its site of origin and mechanism of action. Keywords: cellular immunity| humoral| Mannose-binding lectin (MBL)| Histamine|Body defense system|WBC| Classical Pathway| Lectin Pathway| Properdin or Alternative P athway Introduction The complement system is crucial in the body's defense against invading pathogens and tumor cells. The complement system is a system of plasma enzymes. The liver synthesizes enzymes of the complement system. It comprises over 30 enzymes circulating in the blood and is responsible for cell killing by humoral and cellular immunity. These enzymes are inactive and become active when stimulated by an antigen-antibody complex or other pathways. When in active form, they work in a sequence of cascade reactions to remove pathogens, kill pathogens, initiate and promote inflammation, an...
Arneth count &Index and Schilling index What is Arneth count and index? Table of contents 1. Arneth count & index 2. Schilling test 3. P recursor cells 4. Importance Polymorphonuclear is a type of white blood cells. It is also called a neutrophil. When a neutrophil is formed in the bone marrow, it has a profoundly indented nucleus-single lobed nucleus which is typically U-shaped, and it is called a Stab cell or Schaf's cell . When it is released into the circulation, its nucleus is bilobed. As the cell matures, the number of lobes of the nucleus increases from one to five or six. A very old neutrophil is known as ' Senile neutrophil .' The development of lobes in the nucleus ...
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