@misc{indiciae3a3331154b5b,
  title = {Virus titrations using trypsin modified erythrocytes.},
  author = {K F Shortridge and L Y Hu},
  year = {1977},
  doi = {10.1136/jcp.30.10.993},
  url = {https://pubmed.ncbi.nlm.nih.gov/591636/},
  note = {Source identifier: 591636}
}