Immunisation and types of immunity Active and passive immunity ! from definition for active immunity Watch Video
Preview(s): Play Video: (Note: The default playback of the video is HD VERSION. If your browser is buffering the video slowly, please play the REGULAR MP4 VERSION or Open The Video below for better experience. Thank you!)
⏲ Duration: 3 minutes 38 seconds 👁 View: 71.1K times
Play Audio:
Your browser does not support the audio tag.Please download the audio.