@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/6849},
      title = {Artificial heart valve},
      abstract = {Digital scan of a 35mm slide. Image of an artificial heart  valve on a dark blue background. A conical disc-type valve  has been set inside a metal cage with a white mesh  cloth-covered ring.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4668BTP},
      recid = {6849},
}