{
  "url": "https://openlegislation.uk/eu-directive-2004-73/annex-2H/division-B.43/division-1/division-1.4/division-1.4.3",
  "json_url": "https://openlegislation.uk/eu-directive-2004-73/annex-2H/division-B.43/division-1/division-1.4/division-1.4.3.json",
  "legislation": "eudr/2004/73",
  "legislation_title": "Commission Directive 2004/73/EC of 29 April 2004 adapting to technical progress for the twenty-ninth time Council Directive 67/548/EEC on the approximation of the laws, regulations and administrative provisions relating to the classification, packaging and labelling of dangerous substances (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2004-73",
  "path": "annex/2H/division/B.43/division/1/division/1.4/division/1.4.3",
  "kind": "division",
  "number": "1.4.3",
  "heading": "Preparation of animals",
  "text": "Healthy young animals are randomly assigned to the treatment and control groups. Cages should be arranged in such a way that possible effects due to cage placement are minimized. The animals are identified uniquely and kept in their cages for at least (5) five days prior the start of the study to allow for acclimatization to the laboratory conditions.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2004/73/annex/2H/division/B.43/division/1/division/1.4/division/1.4.3",
    "retrieved_at": "2026-11-01T15:22:47.605967+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}