The artificial introduction of microorganisms into a system.
To introduce vaccine into a person’s body in order to make the body create its own antibodies, so making the person immune to the disease.
To inject an antigen, antiserum, or antitoxin into an individual to produce immunity to a specific disease.
To introduce microorganisms into a living host or a laboratory growth medium, one must apply an inoculum. However, it’s important to note that this term must not be utilized to indicate contamination or infestation.