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Measles vs. the Immune System
From: Susanne Bard
Caption: Measles vaccination in Ethiopia., Credit: UNICEF Ethiopia Creative Commons License BY-NC-ND 2.0, via flickr
The measles vaccine protects the immune system from other infectious diseases.

Bought by KENW, KMXT, and WLPR


  • Added: May 08, 2015
  • Length: 01:00
  • Purchases: 3

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