Que.

A vaccine can be

  • A. an antigenic protein
  • B. weakened pathogen
  • C. live attenuated pathogen
  • D. all of these

Right Answer is :
✓ D. all of these
Views 👍 :429 Share : Share StudyVidya.com on Facebook Share StudyVidya.com on WhatsApp

✒ To discuss this topic Comment