||Innate immunity is something already present in the body.
||Adaptive immunity is created in response to exposure to a foreign substance.
||Fights any foreign invader
||Fight only specific infection
||Slow (1-2 weeks)
||Limited and Lower potency
||Once activated against a specific type of antigen, the immunity remains throughout the life.
||The span of developed immunity can be lifelong or short.
||Innate type of immunity is generally inherited from parents and passed to offspring.
||Adaptive immunity is not passed from the parents to offspring, hence it cannot be inherited.
||Cannot react with equal potency upon repeated exposure to the same pathogen.
||Adaptive system can remember the specific pathogens which have encountered before.
||Present at birth
||Develops during a person’s lifetime and can be short-lived.
||Immediate and Delay hypersensitivity
||Microbes and non-microbial substances called antigens
||Long term memory
||Complement system activation
||Alternative and lectin pathways
||Anatomic and physiological barriers
||Skin, Mucous membranes, Temp, pH, chemicals, etc.
||Lymph nodes, spleen, mucosal associated lymphoid tissue.
||The innate immune system is composed of physical and chemical barriers, phagocytic leukocytes, dendritic cells, natural killer cells, and plasma proteins.
||Adaptive immune system is composed of B cells and T cells.
||Evolutionary, older and is found in both vertebrates and invertebrates.
||Adaptive immunity system has been developed recently and is found only in the vertebrates.
||White blood cells fighting bacteria, causing redness and swelling, when you have a cut.
||Chickenpox vaccination so that we don’t get chickenpox because adaptive immunity system has remembered the foreign body.