Innate vs Adaptive Immunity
Read p. 26, and then watch the video. This optional video summarizes the difference between innate/nonspecific immunity and the higher level of immunity known as adaptive immunity.
https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/introduction-to-immunology/v/types-of-immune-responses-innate-and-adaptive-humoral-vs-cell-mediated (Links to an external site.)Links to an external site.