Fig. 8.

The in vitro inhibition of T. spiralis invasion of IEC by anti-rTsSPI serum. a When IEC monolayer was covered and cultured with the semisolid media containing the larvae at 37 °C for 2 h, the invaded (left) and non-invaded larvae (right) in the IEC monolayer (× 200). b Inhibition of larval invasion of IEC by different dilutions of anti-rTsSPI serum. The 1:100 dilutions of infection serum (IS) and pre-immune serum (PI) were utilized as control sera. The results are shown as the percent of the larvae invaded the monolayer out of all larvae added into the media. Asterisks indicate statistically significant differences (P < 0.001) in comparison with the pre-immune serum group