@article{marassi_zarden_oelemann_lilenbaum_2014,  title={Detection of specific antibodies in cows after injection of PPD},  volume={34},  ISSN={0100-736X},  url={https://doi.org/10.1590/S0100-736X2014000300007},  DOI={10.1590/S0100-736X2014000300007},  number={3},  journal={Pesquisa Veterinária Brasileira},  publisher={Colégio Brasileiro de Patologia Animal - CBPA},  author={Marassi, Carla D. and Zarden, Carlos and Oelemann, Walter and Lilenbaum, Walter},  year={2014},  month={Mar},  pages={241–243} }