@misc{indiciaef1fdbe0b52c7,
  title = {Technique for differentiating particles that are cell-associated or ingested by macrophages.},
  author = {D E Gardner and J A Graham and F J Miller and J W Illing and D L Coffin},
  year = {1973},
  doi = {10.1128/am.25.3.471-475.1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4121509/},
  note = {Source identifier: 4121509}
}