@article{tendler_scapin_1981,  title={Schistosoma mansoni antigenic extracts obtained by different extraction procedures},  volume={76},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761981000200001},  DOI={10.1590/S0074-02761981000200001},  number={2},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Tendler, Miriam and Scapin, Mauro},  year={1981},  month={Apr},  pages={103–109} }