| 21. | Serological or cutaneous tests are not available.
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| 22. | It can be diagnosed through serological tests.
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| 23. | Diagnosis can by made by identifying clinical signs, serological tests, or parasitological tests.
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| 24. | It can be diagnosed through a serological test, but it often produces false negatives.
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| 25. | They share no serological relationship with camel pox, horse pox, or avian poxes.
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| 26. | Serological methods are highly sensitive, specific and often extremely rapid tests used to identify microorganisms.
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| 27. | A high background titre may reduce the positive predictive value of serological tests in endemic countries.
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| 28. | Without serological or HLA-DQ2 / 8 positivity, celiac disease is likely not present.
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| 29. | Serological cross-reactions between Batken and Dhori viruses indicate a phylogenetic relationship between these viruses.
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| 30. | A large number of serological studies show a linkage between the disease and HLA-B51.
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