News Finding: Gut microbiota promote antibody responses to seasonal flu vaccine. Pulendran lab. 
Paper Finding: We found fewer TIV-specific IgG + ASCs and lower serum IgG in antibiotic-treated mice at day 5 after boost injection (Figures 3G and 3H) .
News Context: Gut microbiota promote antibody responses to seasonal flu vaccine. Pulendran lab. 
Paper Context: These results suggest that TLR5 signaling plays an important role in differentiation or function of memory B cells following vaccination with TIV. We found fewer TIV-specific IgG + ASCs and lower serum IgG in antibiotic-treated mice at day 5 after boost injection (Figures 3G and 3H) . A pairwise analysis between the corresponding serum ELISA and B cell ELISPOT samples revealed a positive correlation between the frequency of ASCs and the magnitude of TIV-specific IgG antibodies in the serum (Figure 3I ).