@article{DA,
      recid = {6819},
      title = {Smeloff-Cutter heart valve},
      number = {DA},
      abstract = {Digital scan of a 35mm slide. Image of a Smeloff-Cutter  ball-and-cage style artificial heart valve. The metal cage,  with white mesh cloth-covered ring, encloses an opaque  plastic ball. The valve is set on a green fabric background  with a typed card, which reads: SMELOFF-CUTTER.},
      url = {http://digitalcollections.ohsu.edu/record/6819},
      doi = {https://doi.org/10.6083/M42J69HP},
}