Published in Medical Letter on the CDC and FDA, November 21st, 2004
"Protective antigen (PA) of Bacillus anthracis is the main immunogen of all anthrax vaccines. It is a highly thermolabile molecule and loses its activity rapidly when exposed to higher temperatures. Earlier some cosolvents had been used to stabilize PA with variable success but no study has been done to find out the primary cause of PA thermal inactivation. This study aims at elucidating the predominant cause of thermal inactivation of PA in order to develop more effective strategies for its thermal stabilization," investigators in India report.
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