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. 2007 Nov 20;26(1):24–31. doi: 10.1016/j.vaccine.2007.10.065

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Copyright © 2007 Elsevier Ltd. All rights reserved.

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inhibition of viral plaque formation by (A) serum IgG prepared from sow fed with recombinant L. casei and piglets serum on day 10 after sucking colostrums and (B) colostrum IgA. (A) The number of plaque formed using purified IgG treatment. Control: IgG from sow sera unimmunized with recombinant L. casei; sow sera: IgG from sow sera on day 70 after immunization; piglets serum: IgG from piglet sera on day 10 after sucking colostrums; P.C: positive control IgG. (B) The number of plaque formed using purified IgA treatment. Control: IgA from sows’ colostrum unimmunized with recombinant L. casei; colostrum: IgA from immunized sows’ colostrum immunized with recombinant L. casei; P.C: positive control IgA. The assays were performed in duplicate, and the graphs are representative of two independent experiments. The error bars represent standard deviations.