@misc{indiciae423edef1723d,
  title = {Insulitis--a morphological review.},
  author = {G Freytag and G Klöppel},
  year = {1973},
  doi = {10.1007/978-3-642-65684-2\_2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4590325/},
  note = {Source identifier: 4590325}
}