Question

What is the difference between the four types of human immunity?

Answer 1

There are-
- Natural and Artificial Active Immunity
- Natural and Artificial Passive Immunity
In case of Active immunity, our body produces antibodies from immune cells but in case of passive immunity, antibodies are harvested from elsewhere.

Explanation:

The differences could be summed up from the following illustrations.
Two links are also provided:

https://socratic.org/questions/what-is-difference-between-antibody-and-antigen

https://socratic.org/questions/the-vaccine-for-tuberculosis-contains-a-dead-form-of-the-tuberculosis-bacterium-