Natural killer cells, or NK cells, are a component of the innate immune system which does not directly attack invading microbes. Rather, NK cells destroy compromised host cells, such as tumor cells or virus-infected cells, recognizing such cells by a condition known as missing self..
Definition. Market Value is generally defined as: âThe most probable price which a property should bring in a competitive and open market under all conditions requisite to a fair sale, the buyer and seller, each acting prudently, knowledgeably and assuming the price is not affected by undue stimulus.
A conditioned stimulus is a neural stimulus that gives the same response as an unconditioned stimulus. The effect requires repetition in order to be learned, and over time, a neutral stimulus becomes paired with the unconditioned stimulus and is transformed into a conditioned stimulus. A classic example of this phenomenon is Russian scientist Ivan Pavlovâs experiments with dogs.