Can you please break this down so I understand? The innate immune… Can you please break this down so I understand? The innate immune system tells the adaptive immune system when it’s time to help mount a defense. Innate triggers adaptive. It does this by posting two types of changes on the phagocyte surface that activate the adaptive immune system. These changes are necessary for full immune system activation. The phagocyte is also known as an antigen-presenting cell because after engulfing the invading microbe, it displays pieces of protein from the microbe, called antigens, on its surface, on what is known as the major histocompatibility complex (MHC) molecule. This alerts the adaptive immune system and allows cells known as T cells to recognize an infected cell. Yet that is not enough to trigger the full adaptive immune response. There also needs to be a danger signal or flag displayed on the surface of the cell to call the adaptive immune system into action. This is the job of proteins called pattern-recognition receptors (PRRs). Found on or inside phagocytes, PRRs recognize general groups of microbes that have common traits. They set in motion a sequence of cellular events that results in posting the flags required to trigger an adaptive immune response. They also release a family of chemical messengers. Health Science Science NursingNU NU304
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