Innate immunity; 2. Second line of defence against non-self pathogen. Adaptive Immune System. 1. Differences between adaptive immunity and innate immunity. Hence, the likelihood of contracting the illness is greatly minimized. Adaptive immunity developed as consequence of a single molecular event in bony fish and, due to its evolutionary advantage for larger and long-lived species, it has been maintained and expanded into highly sophisticated system in higher vertebrates. But many pathogens can breach/resist innate immune system. However, the emergence that the innate immune system, the body's first-line defense against pathogens, has a strong influence on adaptive immunity has galvanized interest in elucidating the interplay between these two arms of the immune system. The innate immune system aims to eliminate microbes and other foreign particles using: Physical barriers; Proteins (complement) Cells (phagocytosis, cytotoxic killing). Related Links: To clear such pathogens specific and more robust adaptive immunity comes into play. However Adaptive immune responses are slow to develop on the first revelation of a new pathogen. The immune system delivers this protection via numerous pathways. Adaptive Immunity – Humoral and Cellular Immunity There are two main mechanisms of immunity within the adaptive immune system – humoral and cellular. Example; Skin, hair, cough, mucous membranes, phagocytes, granulocytes. It is always general, or nonspecific. A cut on the skin, if it results in swelling and inflammation, is an example of innate immunity at work. Comparing the Innate and Adaptive Immune Systems - Seattle, WA - Scientific studies directly or indirectly involving human immunity require an … Diseases like chicken pox enable the adaptive immune system to “remember”. Organisms must constantly protect themselves from harm caused by pathogens like viruses and bacteria. The immunity against the invading microbes shown by our body can be grouped into two broad categories – (1) Innate Immunity and (2) Adaptive Immunity. The antibodies attach to pathogens and make it easier for other cells (like T cells or natural killer cells) to get rid of the disease. The immune response is broken down into innate immunity, which an organism is born with, and adaptive immunity, which an organism acquires following disease exposure. Adaptive immunity; The concept of adaptive immunity is creating a memory of a previous pathogen that enters in body and to prepare the immune system for a specific type of pathogen when they try to attack again. This is just one example of innate immunity, and humans have many processes that are similar to this, including a series of receptors called Toll-like receptors that respond to conserved bacterial proteins just like plants do. 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