Aperson who has allergies has a compromised immune system because the body's immune system.
attacks its healthy cells.
overreacts to an antigen.
steals nutrients from healthy cells
responds to wait

A person who has allergies has them because his or her body over reacts to a material that would otherwise be ignored. It is an overreaction of the immune system triggering a immune attack response that is unneeded. For instance, A person with a peanut allergy has a body whose immune system flags the peanut protein as an intruder and attacks it. It produces antibodies and causes growning reactions that can be life threatening and cause anaphylaxis.

Rna polymeras should attache to the promoter.