Figure 6From: Oral vaccination with Trichinella spiralis DNase II DNA vaccine delivered by attenuated Salmonella induces a protective immunity in BALB/c miceLocalization of natural TsDNase II in T. spiralis adult worms at 3 dpi by IIFT with serum of mice vaccinated with TsDNase II vaccine (A), pcDNA3.1 alone (B) or PBS (C). Infection serum was utilized as a positive control (D). Scale bar = 50 μm.Back to article page