An example of a protein that helps fight off infection is antibodies.
You're talking about antibodies.
antibody
antibody
Antibodies
antibodies
response
e
white blood cells
antigens
monomers
T-lymphocytes
cytoplasm
white blood cells
antibodies
Antigens are protein substances formed in the blood to destroy foreign substances. Antigens can also be administered artificially in some cases.
Foreign substances would suffice as well as contaminants, toxins, etc.
antigens
Antibodies are proteins released by a type of white blood cell called lymphocytes. They destroy hostile microbes in the body.
monomers
proteins
Air pollutants
Proteins
Food allergies occur when the immune system mounts an attack on certain proteins in certain foods. The substances in the food that trigger this immune-system response are called allergens. The immune system is a complex network of cells and molecules that help defend the body against foreign substances. When a properly functioning immune system detects a foreign substance, it responds to this threat by producing proteins called antibodies against the invaders. The antibodies will recognize and attack this foreign substance when they next encounter it. This "battle" is what causes the allergy symptoms.
These substances are called enzymes.