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Bio - Macrophages -
Hank tells us about the team of deadly ninja assassins that is tasked with protecting our bodies from all the bad guys that want to kill us - also known as our immune system. Crash Course Biology is now available on DVD! http://dft.ba/-8bCC Like CrashC... -
In studio, Alex hosts cancer survivor Genae Girard, who recently won a Supreme Court case against patents on naturally occurring DNA. The victory has already lowered the cost of breast cancer testing. http://www.offtherackbook.com/ https://twitter.com/...