Antiserum differs from a vaccine in that antiserum
- A. contains weakened pathogens
- B. contains ready made antibodies and gives only temporary protection
- C. produces lifelong immunity
- D. stimulates the formation of memory cells
Explanation
Antiserum lends antibodies for immediate, short lived defence, while a vaccine teaches the body to make its own, lasting protection. Passive versus active is the distinction behind every option here.