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bovine serum: 56 to 60 °C for 30 to 50 minutes,
porcine serum: 60 °C for 30 to 50 minutes.
control of the anti-complementary effect of the serum;
control of the antigen;
control of sensitised red blood cells;
control of the complement;
control using a positive serum of sensitivity at the start of the reaction;
control of the specificity of the reaction using a negative serum.
The OIEISS contains 1 000 international CFT units (ICFTU) per ml. If the OIEISS is tested in a given method the result is given as a titre (i.e. highest direct dilution of the OIEISS giving 50 % haemolysis, T OIEISS ). The test result for the test serum given as titre (T TESTSERUM ) must be expressed in ICFTU per ml. In order to convert the expression of a titre into ICFTU, the factor (F) necessary to convert a titre of an unknown test serum (T TESTSERUM ) tested by that method into the ICFTU expression can be found from the formula:
F = 1 000 × 1/T OIEISS
and the content of international CFT units per ml of test serum (ICFTU TESTSERUM ) from the formula:
ICFTU TESTSERUM = F × T TESTSERUM
A serum containing 20 or more ICFTU per ml shall be considered to be positive.] ] ]
Textual Amendments
F1 Substituted by Council Directive 97/12/EC of 17 March 1997 amending and updating Directive 64/432/EEC on health problems affecting intra-Community trade in bovine animals and swine.
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