@article{cummings_1999,  title={Structure and function of the selectin ligand PSGL-1},  volume={32},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X1999000500004},  DOI={10.1590/S0100-879X1999000500004},  number={5},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Cummings, R.D.},  year={1999},  month={May},  pages={519–528} }