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Re-Release: Ep 26 Vaccines Part 1: Let's hear it for Maurice

This Podcast Will Kill You

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The Importance of W.I. 38 Cells in Vaccine Development

Vaccines made from SV 40 infected cells could not be considered safe, which meant massive and expensive testing. A man named Leonard Haeflic developed a strain of cells from human fetal lung tissue that he believed held great promise for the field of virology. The W.I. 38 cells did not turn cancerous, as did many other cell types used in culture; they were shown to be free of any viruses.

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