Jenner prepared the vaccine for small pox by using

Options :
  1. attenuated pathogen of small pox
  2. smaller doses of small pox virus
  3. attenuated form of cow pox virus
  4. material from cow pox pustule


Answer and Explanation :-

Answer: Option 4

Explanation:

Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : The term vaccine was introduced by

Next Question : The relation between disease and pathogen was clearly depicted by

Click here for free online test on Medical Zoology

Responses


 (Getemail alerts when others member replies)







HELP!"I race to the square, crossing it, looking all around, listening out-No.No.It's empty.Viola's breathing heavy in my arms .And Haven is empty.I reach the middle of the square.I don't see nor hear a soul.I spin around again."HELP!" I cry.But there's no one.Haven's completely empty.There ain't hope here after all.
-Patrick Ness The Knife of Never Letting Go