@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/6851},
      title = {Artificial heart valve},
      abstract = {Digital scan of a 35mm slide. Image of a Russian model of  a disc-style artificial heart valve. The white product case  has been set on its edge so that the label writing can be  seen. The valve has been placed on the light blue  background in front of the case. The opaque plastic disc is  enclosed in a metal cage with a white mesh cloth-covered  ring.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4XP73M2},
      recid = {6851},
}