*will mark brainliest* the immune system works against a antigen by producing an antibody. *sorry if it doesn't make sense*

What is true about the roles you have in your family?family roles only exist within a household. roles you have are the same even outside of the home. roles remain the same despite changing age. roles you have change with age, experience, and knowledge.

Occurs when the immune system attacks the body. lupus cancer sickle cell disease huntingtons disease

Which action is characterized of mental illness 1.brushing teeth every hour because ones mouth feels dirty ? 2. forgetting to eat breakfast on a busy day? 3.crying three days over a relationship breakup? 4.feeling embarrassed about going to school after failing in front of friends?