@misc{indiciaed987be514b65,
  title = {The echinoid immune system revisited.},
  author = {R D Karp},
  year = {1993},
  doi = {10.1016/0167-5699(93)90069-w},
  url = {https://pubmed.ncbi.nlm.nih.gov/8447937/},
  note = {Source identifier: 8447937}
}