# 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), Division 1.5.3: Oestrus cycle

Extent: E+W+S+N.I.

Estrous cycle length and normality are evaluated in P and F1 females by vaginal smears prior to mating, and optionally during mating, until evidence of mating is found. When obtaining vaginal/cervical cells, care should be taken to avoid disturbance of mucosa and subsequently, the induction of pseudopregnancy (1).

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Source: https://www.legislation.gov.uk/eudr/2004/73/annex/n8/division/B.35/division/1/division/1.5/division/1.5.3 (the official version)
Page: https://openlegislation.uk/eu-directive-2004-73/annex-n8/division-B.35/division-1/division-1.5/division-1.5.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.