Fig. 8
![Fig. 8](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13071-023-06067-7/MediaObjects/13071_2023_6067_Fig8_HTML.png)
Dynamic changes in serum specific IgG and IgM in serum of mice infected with 20 T. spiralis larvae collected at 2–30 dpi, detected by ELISA. a, b Specific IgG levels in serum of infected mice assayed by rTsTryp-ELISA (a) and ES antigens-ELISA (b). c, d Serum specific IgM levels of infected mice assayed by rTsTryp-ELISA (c) and ES antigens-ELISA (d). The dashed lines in the figures are the cutoff values of IgG and IgM. dpi, Days post-infection; ELISA, enzyme-linked immunosorbent assay; ES, excretory/secretory; IgG/IgM, immunoglobulin G/M; OD, optical density; rTsTryp, recombinant T. spiralis trypsin