Introduction: Why Cells Choose to Die It sounds like a contradiction. Why would a cell—a unit of life—meticulously plan and execute its own destruction? Yet, in multicellular organisms, controlled cell suicide is not only common; it is absolutely essential. This…
The Classical Pathway of Complement Activation is one of the most important mechanisms of the immune system. It acts as a bridge between adaptive immunity (antibodies) and innate immunity (complement proteins).This pathway is called classical because it was the first…
The complement system is a crucial component of the immune system that serves as a bridge between innate and adaptive immunity. It consists of a group of plasma proteins that circulate in an inactive form and become activated in response…
The immune system protects the body from infections using a complex network that includes not only lymphoid organs but also various cells, molecules, and physical barriers. Lymphoid organs are specialized and well-organized tissues that form essential components of the immune…