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@radio66official.linh98: Không có ai khuyên được ai trong lĩnh vực tình yêu đâu...! #radio66📻 #radio66official #lnl98 #xuhuong #LearnOnTikTok #suyngam #cuocsong #tinhyeu
𝐑𝐚𝐝𝐢o𝟔𝟔 𝐎𝐟𝐟𝐢𝐜𝐢𝐚𝐥
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Region: VN
Monday 11 December 2023 14:02:46 GMT
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Nguyễn Văn Đức :
@Hà Anh
2024-01-01 15:50:44
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Dăng Lộc :
❤️❤️
2023-12-11 14:16:51
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kỷ đen 37 🇹🇼 :
@tranghoang1112
2024-01-27 01:28:17
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Minh Trúc :
😊
2023-12-20 04:52:46
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1•9•9•9🎈💸💸 :
🥰
2023-12-16 13:06:49
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Sầu Riêng .10.9.88 :
🥰🥰🥰
2023-12-14 15:16:19
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😐 :
🥺🥺
2023-12-12 11:20:42
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The immune system is a sophisticated defense mechanism that protects the body from harmful pathogens like bacteria, viruses, fungi, and parasites. It's composed of various cells, tissues, and organs that work collaboratively to combat infections and diseases. The immune system can be broadly divided into two categories: innate immunity and adaptive immunity. Innate immunity is the body's first line of defense and includes physical barriers like skin and mucous membranes, as well as immune cells like neutrophils, macrophages, and dendritic cells. Neutrophils are the most abundant type of white blood cells and are the first responders to infection. They quickly arrive at infection sites to engulf and destroy pathogens. Macrophages are larger cells that not only devour pathogens but also help in healing and tissue repair. Dendritic cells act as messengers between the innate and adaptive immune systems, identifying pathogens and presenting their antigens to the cells involved in adaptive immunity. Adaptive immunity, on the other hand, is a specific response to pathogens that the body has previously encountered. This system relies on lymphocytes, which include T cells and B cells. T cells can be further categorized into Helper T cells and Killer T cells. Helper T cells orchestrate the immune response by signaling other cells, whereas Killer T cells destroy infected host cells. B cells produce antibodies, which are specific proteins that bind to antigens on pathogens, marking them for destruction or neutralizing them directly. Each cell type plays a distinct and crucial role in the immune response, ensuring the body is equipped to recognize and respond to a wide range of pathogens. This complex network of cells and responses is what keeps our body healthy and able to fight off infections. #meme #biologymeme #bio #biology #cellbiology #immunology #immunesystem #immunecells #biomajor
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