I would say reasonable evidence that was 110% true. Otherwise you are putting possiblly false information into the cell theory :)
First Plasmid is a chromosomal element often a circular DNA.
The uptake of a plasmid from the environment is NOT a common event reason being, bacteria naturally take up DNA from their environment in a process called transformation. Thus if a bacterium takes up a piece of DNA that cannot be maintained in a cell then that cell will not survive.
Answer:
Antibodies.
Explanation:
The generation of an immune response requires an antigen. The antigen may be any pathogenic organism or any chemical that are capable of evoking an immune response.
Antibodies are produced by the body to kill the antigen. The scientist should use an specific antibody to know the type of bacteria that infects the throat. The component of the pill should be antibody.