Immune System - Lecture 1 | Class 12 | Unacademy NEET | NEET LIVE DAILY | NEET Biology | Sachin Sir

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Dr. Sachin Kapur Sir takes the first lecture on Immune System for class 12 students on Unacademy NEET LIVE DAILY, where he explains external and internal immune defense in detail.

The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease. To function properly, an immune system must detect a wide variety of agents, known as pathogens, from viruses to parasitic worms, and distinguish them from the organism's own healthy tissue. In many species, there are two major subsystems of the immune system: the innate immune system and the adaptive immune system.

Both subsystems use humoral immunity and cell-mediated immunity to perform their functions. In humans, the blood-brain barrier, blood-cerebrospinal fluid barrier, and similar fluid–brain barriers separate the peripheral immune system from the neuroimmune system, which protects the brain.
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Видео Immune System - Lecture 1 | Class 12 | Unacademy NEET | NEET LIVE DAILY | NEET Biology | Sachin Sir канала Unacademy NEET