Anthelmintic-Like Activity and Ultrastructure Changes Produced by Two Polyphenolic Combinations against Adult Worms and Infective Larvae.

is one of the most prevalent gastrointestinal nematodes affecting cattle under grazing conditions, and the increasing reports of anthelmintic resistance forces researchers to look for novel control measures. Previous reports have proposed the use of polyphenolic compound (PC) combinations (Coumarin:Quercetin (CuQ) and Caffeic-acid:Rutin (CaR)) against free-living stages (L) of . The objective of this study was to assess the in vitro motility inhibition of adult worms and infective larvae using the Larval Motility Inhibition Assay (LMIA) and Adult Motility Inhibition Assay (AMIA), and to assess the structural and ultrastructural changes induced by both treatments using Scanning and Transmission Electron Microscopy.