@article{DA,
      url = {http://digitalcollections.ohsu.edu/record/6820},
      title = {Artificial heart valve},
      abstract = {Digital scan of a 35mm slide. Image of a ball-and-cage  style artificial heart valve, shown from the bottom. The  metal ball is reflecting the camera used to take the  picture. The bottom of the cage is covered in white mesh  cloth fabric. The valve is set on a green fabric  background.},
      number = {DA},
      doi = {https://doi.org/10.6083/M4XS5T1D},
      recid = {6820},
}