Question

Certain preparations contain killed or weakened live biological agents that, upon injection into our body, protect the body against those pathogens. What are these preparations called? .

Answer 1

Answer: Vaccine

Explanation: The preparations that contains the weakened or live form of biological agents are injected in the body to protect the body against pathogens is known as vaccine.

This is used to create a memory of the pathogens inside the body so that when the body is affected by it for the second time, antibodies for the particular antigen is already present in the body.

This helps in prevention of the body from harmful disease.

Answer 2

These preparations are called Vaccines. A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing micro-organism and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.