@article{DA,
      recid = {6824},
      title = {Artificial heart valve, implantation},
      number = {DA},
      abstract = {Digital scan of a 35mm slide. Image of an implanted  ball-and-cage style artificial heart valve. The metal ball  is enclosed in a tissue-covered cage.},
      url = {http://digitalcollections.ohsu.edu/record/6824},
      doi = {https://doi.org/10.6083/M4DV1HJX},
}