Fig. 3.

Immunoblot pattern of (presumed) lungworm negative (lane numbers indicated in blue: 1–5 = animals born in human care; 2–5 sampled over three consecutive years; 6–8 = no infection detected) as well as lungworm positive (lane numbers indicated in red: lane 9 = moderate infection; lane 10 = severe infection; lanes 11–16 = direct lungworm detection) harbour porpoise sera. Lane 17 = D. viviparus positive control serum, M = Spectra™ Multicolour Broad Range Protein Ladder (Thermo Fisher Scientific GmbH, Dreieich, Germany). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)