Immunology is the practice of assisting someone's body develop and immunity
for a particular organism or virus. Under most circumstances, a patient will goto a doctor's office and get a flu shot
or a blend of dead virii
specially tailored to the patient's needs injected. Then, the body's immune system reacts to the dead virii
or cells by creating an immune response
and destroying them. This creates an acquired immunity
, and will fend off any further attacks by that particular virii or bacteria. Dead cells are used because they represent no harm to the patient, but are still effective in triggering an immune response.
Many allergy treatment methods involve immunology. See allergies & allergic reactions