What does K45/20A stand for?

MLA style: "K45/20A." Acronym Finder . 2012. AcronymFinder.com 30 May. 2012 <a href="http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html">http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html
Chicago style: Acronym Finder . S.v. "K45/20A." Retrieved May 30 2012 from <a href="http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html">http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html
APA style: K45/20A. (n.d.) Acronym Finder. (2012). Retrieved May 30 2012 from <a href="http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html">http://www.acronymfinder.com/Killed-B.-Abortus-Strain-45%2f20-Adjuvant-(K45%2f20A).html

Killed B. Abortus Strain 45/20 Adjuvant

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