What's Included. 1  Official IAPP CIPP participant guide. 2  Official IAPP CIPP textbook. 3  Official IAPP CIPP practice test. 4  IAPP CIPP/G certification exam voucher. 5  IAPP Membership for one year.
Natural killer cells (NK cells) are a component of the innate immune system that 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..
NK cells are a part of the innate immune system and play a major role in defending the host from both tumors and virally infected cells. NK cells distinguish infected cells and tumors from normal and uninfected cells by recognizing changes of a surface molecule called MHC (major histocompatibility complex) class I.