@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/6822},
      title = {Artificial heart valves},
      abstract = {Digital scan of a 35mm slide. Two ball-and-cage style  artificial heart valves are shown against a red background.  The metal cages, with white mesh cloth-covered rings,  enclose white plastic balls.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4PC311T},
      recid = {6822},
}