@misc{indiciaeed0295c27dc8,
  title = {Blood vessels casting a shadow.},
  author = {W R Levick},
  year = {2003},
  doi = {10.1126/science.299.5615.1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/12663898/},
  note = {Source identifier: 12663898}
}