NOVA

Immunity and Vaccines Explained

Clip: Season 41 Episode 14 | 2m 11s | Video has closed captioning.

Vaccines work with our immune system to keep us from getting sick.

Aired: 09/04/14

Rating: TV-PG

Problems Playing Video? | Closed Captioning

Major funding for NOVA is provided by the David H. Koch Fund for Science, the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers.

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