@article{moraes-pinto_suano-souza_aranda_2021,  title={Immune system: development and acquisition of immunological competence},  volume={97},  ISSN={0021-7557},  url={https://doi.org/10.1016/j.jped.2020.10.006},  DOI={10.1016/j.jped.2020.10.006},  journal={Jornal de Pediatria},  publisher={Sociedade Brasileira de Pediatria},  author={Moraes-Pinto, Maria Isabel de and Suano-Souza, Fabíola and Aranda, Carolina S.},  year={2021},  month={Mar},  pages={59–66} }