Poison ivy isn't poisonous -- it causes an allergic reaction that can take days to appear. Learn about poison ivy and how to avoid it in today's episode of BrainStuff, based on this article: https://science.howstuffworks.com/life/botany/poison-ivy.htm/printable

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Episode: https://omny.fm/shows/brainstuff/why-does-poison-ivy-cause-a-rash

Podcast: https://www.iheart.com/podcast/brainstuff-20922291/