{
  "url": "https://openlegislation.uk/eu-regulation-2013-283/annex/part-B/division-5/division-3/division-5.4/division-1",
  "json_url": "https://openlegislation.uk/eu-regulation-2013-283/annex/part-B/division-5/division-3/division-5.4/division-1.json",
  "legislation": "eur/2013/283",
  "legislation_title": "Commission Regulation (EU) No 283/2013 of 1 March 2013 setting out the data requirements for active substances, in accordance with Regulation (EC) No 1107/2009 of the European Parliament and of the Council concerning the placing of plant protection products on the market (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2013-283",
  "path": "annex/part/B/division/5/division/3/division/5.4/division/1",
  "kind": "division",
  "number": null,
  "heading": "Circumstances in which required",
  "text": "If all the results of the in vitro studies are negative further testing must be done with consideration of other relevant information available. The test can be an in vivo study or an in vitro study using a different metabolising system from that/those previously used.\nIf the in vitro cytogenetic test is positive, an in vivo test using somatic cells (metaphase analysis in rodent bone marrow or micronucleus test in rodents) must be conducted.\nIf either of the in vitro gene mutation tests is positive, an in vivo test to investigate unscheduled DNA synthesis or a mouse spot test must be conducted.",
  "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/eur/2013/283/annex/part/B/division/5/division/3/division/5.4/division/1",
    "retrieved_at": "2026-11-01T14:48:46.014078+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."
}