CIGB · The vaccine (VACOLI , Heber Biotec, S.A. P.O. Box 6162, Havana, Cuba) was prepared by the...
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CIGB · The vaccine (VACOLI , Heber Biotec, S.A. P.O. Box 6162, Havana, Cuba) was prepared by the thermic removal of recombi- nant pilus adhesins K88ab and K99 from the surface of