Effect of pH on stability of recombinant botulinum serotype A vaccine in aqueous solution and during storage of freeze-dried formulations.
Roy S, Henderson I, Nayar R, Randolph TW, Carpenter JF. Effect of pH on stability of recombinant botulinum serotype A vaccine in aqueous solution and during storage of freeze-dried formulations. J Pharm Sci. 2008 Dec; 97(12):5132-46.