Typhoid vi antigen vaccine

petergun at bora.dacom.co.kr petergun at bora.dacom.co.kr
Thu Jul 4 08:05:40 EST 1996

I can not separate lipopolysaccharide from polysacchride in Salmonella 
typhi Ty2 culture broth.They are very similar on M.W. and structure.
Could you please help me or introduce someone who can solve the problem.
Thank you.

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