Antibody Antibodies, they got your back. Well, they got your body. They’re proteins your immune system deploys in response to anything that’s trying to do you harm, like bacteria and viruses. Other Terms Ageusia Taste buds in a tangle? Meet Ageusia. Albumin Protein that keeps your bloodstream moving. Allodynia Don’t like people being all up in your face? Alopecia The immune system malfunction linked to hair loss. View More