Harvesting embryos containing yellow fever vaccine virus. Tops of eggs...
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Experimenting on rabbit. This little rabbit is doing its bit for scien...
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Innoculating eggs with yellow fever vaccine virus. USPHS (United State...
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Harvesting embryos containing yellow fever vaccine virus. USPHS (Unite...
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Using acetylene torch to remove tops of eggs under completely sterile ...
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Using acetylene torch to take tops off eggs under completely sterile c...
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Harvesting embryos containing yellow fever vaccine virus. USPHS (Unite...
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Harvesting embryos containing yellow fever vaccine virus. USPHS (Unite...
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Public Health Surgeon. Dr. Charles Armstrong, Public Health Surgeon an...
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