Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


vaccine is a medicine.it is a preparation of the virus of cowpox taken frm infected cows and inoculated in humans to produce immunity to smallpox.
0 0 0
A preparation containing usually killed or weakend microorganisms that is given usually by injection to increase protection against a particular disease.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts