{
  "annotation_id": "f41d5a83-54c9-44c5-b2fd-73f942c464d4",
  "date_created": "2026-03-02T18:01:31.017000Z",
  "date_modified": "2026-03-02T18:01:31.017000Z",
  "file_hash": "91351677cbd0986b9b7616980851d73608ca40f08f48c2b9ae2142e193427f8f",
  "private": false,
  "record": {
    "abstract": "At the basic geometric level, the distribution networks carrying vital\nmaterials in living organisms, and the units such as the nephrons and alveoli,\nform a scaling structure named here the site model. This unified view of the\nallometry of the kidney and lung of mammals is in agreement with the existing\ndata, and in some cases, improves the predictions of the previous fractal model\nof the lung. Allometric scaling of surfaces and volumes of relevant organ parts\nare derived from a few simple propositions about the collective characteristics\nof the sites. New hypotheses and predictions are formulated, some verified by\nthe data, while others remain to be tested, such as the scaling of the number\nof capillaries and the site model description of other organs.",
    "arxiv_id": "q-bio/0404039",
    "authors": [
      "Walton R. Gutierrez"
    ],
    "categories": [
      "q-bio.TO",
      "q-bio.QM"
    ],
    "title": "Site Model of Allometric Scaling and Fractal Distribution Networks of   Organs",
    "url": "https://arxiv.org/abs/q-bio/0404039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "52501b76-b855-42fb-8eaa-d2831964fe6d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}