Fig. 2

E. faecalis SI-FC-01 can improve the health of C. elegans. (a) The body size from wild-type (N2) worms grown on E. coli OP50 and E. faecalis SI-FC-01 (N = 30 worms, p > 0.05, F-test). (b) Effect of feeding E. coli OP50 or E. faecalis SI-FC-01 on gonadal cell apoptosis in N2 worms (N = 90 worms, Student’s t-test). (c) The head thrashes from 4D, 8D and 12D wild-type (N2) worms grown on E. coli OP50 and E. faecalis SI-FC-01 are significantly different at p < 0.05, p < 0.05 and p < 0.001 (N = 60, Student’s t-test). (d) Altered salinity tropism after salt aversion learning in wild-type worms N2 fed E. coli OP50 or E. faecalis SI-FC-01 (N ≥ 300 worms, p < 0.001 and p < 0.001, two-way ANOVA). e Changes in accumulation of lipofuscin in wild-type worms N2 after E. faecalis SI-FC-01 feeding in 4D,8D,12D. (N = 60 worms per time period, Student’s t test)