What two glycoproteins are expressed on the surface of influenza A viruses and are used for subtyping of the viruses?
Prozone effect (due to antibody excess) will result in an initial false negative in spite of the large amount of antibody in the serum, followed by a positive result as the specimen is diluted.
The prozone effect ( when performing a screening titer) is most likely to result in:
TESTED 02 May 2024
