An AC-5 cathepsin B-like protease purified from Haemonchus contortus excretory secretory products shows protective antigen potential for lambs Erik De Vries, Nicole Bakker, Jeroen Krijgsveld, Dave P. Knox, Albert J.R. Heck and Ana Patricia YatsudaVet. Res., 40 4 (2009) 41DOI: https://doi.org/10.1051/vetres/2009025