{"id":7430,"date":"2021-12-29T22:12:42","date_gmt":"2021-12-29T22:12:42","guid":{"rendered":"https:\/\/qualiss.com.tr\/?p=7430"},"modified":"2026-10-29T16:22:32","modified_gmt":"2026-10-29T13:22:32","slug":"what-is-immune-system-immune-system","status":"publish","type":"post","link":"https:\/\/qualiss.com.tr\/en\/what-is-immune-system-immune-system\/","title":{"rendered":"WHAT IS THE IMMUNE SYSTEM?"},"content":{"rendered":"
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What Is the Immune System? Our Body\u2019s Defense Shield<\/h2>\n

The immune system is an extraordinarily complex and intelligent defense network that protects our body against harmful pathogens\u2014bacteria, viruses, fungi, parasites, and even our own body\u2019s defective cells that tend to become cancerous. This flawless cooperation, carried out jointly by cells, tissues, and organs, is the fundamental key to maintaining a healthy life.<\/p>\n

How Does the Immune System Work? The Distinction Between \u201cSelf\u201d and \u201cForeign\u201d<\/h3>\n

The most basic task of the immune system is to recognize foreign molecules (antigens) that enter the body and distinguish them from a person\u2019s \u201cown\u201d healthy cells. When the system works correctly, it detects foreign structures, develops an effective attack strategy against them, destroys them, and stores them in its memory for a possible future encounter. The immune system basically consists of two main divisions:<\/p>\n

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  1. \n Natural (Innate) Immune System:<\/strong> It is the body\u2019s inborn first line of defense. It gives a quick but general response to any kind of foreign substance it encounters, without discrimination. The skin, stomach acid, enzymes in tears, and white blood cells called \u201cphagocytes,\u201d which engulf and destroy pathogens that manage to get into the body, are the building blocks of this group.\n <\/li>\n
  2. \n Acquired (Adaptive) Immune System:<\/strong> It is the specific line of defense. When a pathogen enters the body, it produces special weapons (antibodies) against it. T lymphocytes and B lymphocytes (T and B cells) are the main soldiers of this system. This system \u201cremembers\u201d a disease it has encountered before (immunological memory); so when the same organism attacks again, it develops a much faster and stronger response. The working principle of vaccines is also based entirely on this immunological memory.\n <\/li>\n<\/ol>\n

    What Are the Main Parts of the Immune System?<\/h3>\n

    The soldiers of this defense mechanism are distributed across different regions of the body:<\/p>\n