# The Bovine Embryo (Collection, Production and Transfer) Regulations 1995, Paragraph 10

Extent: E+W+S

After the last wash each bovine embryo shall be subjected to microscopic examination at a magnification of at least 50× over its entire surface to determine that the zona pellucida is intact and is free from any adherent material. Any micromanipulation which involves penetration of the zona pellucida must be carried out after the last wash and examination in the facilities approved for the purpose. Such micromanipulation may only be carried out on a bovine embryo having an intact zona pellucida.

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Source: https://www.legislation.gov.uk/uksi/1995/2478/schedule/4/paragraph/10 (the official version)
Page: https://openlegislation.uk/bovine-embryo-collection-production-and-transfer-regulations-1995/schedule-4/paragraph-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.