Immunity and Vaccines Explained

[@madalchemist31]

underrated video

[@Decision_Justice]

Excellent and Concise!

[@simplejuan]

I am a 5th grade and I love your videos, Nova. Pls make more!

[@chuulires8848]

Damn who old are u now?

[@cadenriggs5578]

@@chuulires8848 college lol

[@TheCherry1994]

Nice visualisation

[@srutisharma9565]

Good video

[@Savitri-e9p]

Best video 😊

[@Incinerate1212]

zp zap indeed has his brain zapped

[@Sophy-zf4sm]

The only way I can understand bio😭😭😭

[@SENPAI_K1NG]

really best video W

[@AsmaMahmoud-k7e]

very nice ❤

[@lynnepeng1626]

Wait wait wait... MY SCHOOL IS INJECTING A VIRUS INTO MY BODY TOMORROW?!?!?!?!?!?!?!?!?!?

[@skabb15]

And AMAZING...you arent dead or autistic! Go figure.....

[@abrianaexplores9395]

Haha LOL

[@tedproductions01]

What happens when there is mutation

[@bunbunnbunnybun]

Ohhh... so that is how vaccines do..

[@clarksonsouza8381]

Tendi foi nd