What's it called when the body mistakes its own cells or tissues for intruders?

Every person’s body is different, a. but every vehicle’s cabin layout is the same b. and every vehicle’s cabin layout is different c. making some people automatically safe drivers d. making some people better fit to drive a sedan than a coupe

Brian said that when you get your body broken such as a arm or leg. it means your bones break to pieces and must do surgery or get a cast to fix it.is it true or false?

Which of the following statements is true? a. poll data show that a majority of americans accept gay and b. open discussions of sexuality are welcomed by all families, c. homophobic stereotypes rarely occur in the media anymore. lesbian relationships. religious grougs, and social networks. d. poll data show that bisexuality and homosexuality are viewed positively by all parts of society