The immune system (प्रतिरक्षा प्रणाली) 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, … Continue reading Immune System & Free Siddha Energy Remedies
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