Epitope analysis and protection by a ROP19 DNA vaccine against Toxoplasma gondii Jian Zhou, Lin Wang, Gang Lu, Aihua Zhou, Meiyan Zhu, Qihang Li, Zhilin Wang, Miradel Arken, Ao Wang and Shenyi He Parasite, 23 (2016) 17 Published online: 07 April 2016 DOI: 10.1051/parasite/2016017