Trudy joins the the TWiVlords to discuss new testsÂ for detecting prions in the blood, and evidence showing that foamy retroviruses originated in the seas with their jawed vertebrate hosts at least 450 million years ago.
You can find TWiV #424 at microbe.tv/twiv, or listen below.
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DownloadÂ TWiV 424Â (67 MB .mp3, 111 min)
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