Do you know the female scientist who developed the global standard used in TB testing httpson.pfizer.com2IGogW5Âpic.twitter.com76im1VDekh

Do you know the female scientist who developed the global standard used in #TB testing? https://on.pfizer.com/2IGogW5 pic.twitter.com/76im1VDekh

13:19 EDT 17 Apr 2019 | Pfizer

Do you know the female scientist who developed the global standard used in #TB testing? https://on.pfizer.com/2IGogW5  pic.twitter.com/76im1VDekh

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