has role in taxon Neospora caninum tachyzoite protective antigen role protective antigen Neospora caninum protein NcDG2 Oliver He Protegen ID: 621; NCBI Protein GI: 3237325; NCBITaxon: 29176 protein Separate groups of gerbils were immunized with purified recombinant proteins singly or in combinations and animals were then challenged with N. caninum. The protective efficacy of each vaccination was determined by assessing animal survival rate. All experimental groups showed protective effects. Vaccination with NcDG2 alone elicited 50% survival rate compared to a control survival rate of 17.4% [PubMed: 15793355]. Allen Xiang