Occasionally When Doing Serologic Testing to Identify Strains of Salmonella

question 33

Multiple Choice

Occasionally when doing serologic testing to identify strains of Salmonella isolates, the test for different O antigens is negative.What is the most likely explanation?

• A)The H antigens are masking the O antigens.
• B)The K antigens are masking the O antigens.
• C)The K antigens are maskng the H antigens.
• D)There is no O antigen present.

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