Antiserum is like the special powers that come from a superhero's suit. Just like how a superhero's suit has specific powers to help them fight bad guys, an antiserum has special powers to help fight bad germs or viruses that make us feel sick.
When we get sick, our body makes things called antibodies that help fight off the germs making us sick. But sometimes our body needs extra help fighting off the germs, and that's where antiserum comes in.
Antiserum is made by taking blood from an animal, like a horse or rabbit, that has been given a vaccine or infected with the same germs that make us sick. When the animal's body fights off the germs, it makes lots of antibodies. Scientists can then take those antibodies from the animal's blood and turn them into antiserum.
When we get antiserum, it's like we're putting on a superhero suit that has the specific antibodies we need to fight off the germs that make us sick. The antiserum goes to work to kill off the germs and make us feel better.
So, just like a superhero suit gives us special powers to fight bad guys, antiserum gives us special antibodies to fight bad germs and viruses that make us feel sick!