Extract and preparation containing said extract

  • US 9,884,077 B2
  • Filed: 04/30/2014
  • Issued: 02/06/2018
  • Est. Priority Date: 04/30/2013
  • Status: Active Grant
First Claim
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1. A preparation comprising an extract from inflamed skins of rabbits inoculated with vaccinia virus, wherein the variations in the effect of the preparation among manufacturing lots are reduced by the amount of sulfated tyrosine contained in the preparation being measured for each manufacturing lot and the content is confirmed to be 125 ng or more per unit of the extract in the preparation.

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