How Poison Ivy Works

http://www.cdc.gov/niosh/topics/plants/
Why does poison ivy cause a rash and blisters? What happens when urushiol, poison ivy's toxic oil, gets onto the skin? Learn how poison ivy works—and find out more about poisonous plants from NIOSH.

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https://www.cdc.gov/niosh/video/lo-res/POISON-IVY/poisonivy_RB_LoRes.mp4

Видео How Poison Ivy Works канала Centers for Disease Control and Prevention (CDC)