All Clarivate websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.
The natural immune system has two lines of defense that complement each other. In response to an infection, a rapid but fairly unspecific and short-lived response by the innate immune system is followed by the precisely targeted attack of the B and T cells of the adaptive immune system, followed by immune memory that can last a lifetime