Final answer:
A toxoid vaccine is an immunization made from an inactivated toxin rather than the organism itself, which stimulates an immune response to neutralize the toxin and confer immunity.
Step-by-step explanation:
An immunization that is made from the toxin of an organism, rather than the organism itself, is called a toxoid vaccine. Toxoid vaccines are special types of vaccines that contain inactivated bacterial toxins, also known as toxoids. These vaccines are used to prevent diseases in which bacterial toxins are a major factor in causing the disease. The process involves activating the humoral immunity within the body, which neutralizes the toxins and provides immunity without causing the sickness.
Vaccination triggers an immune response against the injected antigen, which allows the body to prepare 'memory' cells. These memory cells are then ready to respond if the antigen is ever encountered again in the future. Therefore, toxoid vaccines, like other vaccines, help to create immunity to a pathogen by mimicking an infection and triggering an immune response without making the person sick.