# Council Directive of 26 June 1964 on animal health problems affecting intra-Community trade in bovine animals and swine (64/432/EEC), Division 2.5.4: Interpretation of results

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

Any visible reaction shall be considered to be positive, unless there has been excessive drying round the edges.
Positive and negative working standards shall be included in each series of tests.

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Source: https://www.legislation.gov.uk/eudr/1964/432/annex/C/division/2/division/2.5/division/2.5.4 (the official version)
Page: https://openlegislation.uk/eu-directive-1964-432/annex-C/division-2/division-2.5/division-2.5.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.