Purified virions. May react with chicken cellular proteins. Specific to H3N2 by IHA. Does not react with HEp-2 cells, Influenza B, RSV, Para 1-3 or Adeno.

Short-term (up to 6 months) store at 2-8°C under subdued light. Long term, aliquot and store at -20 °C. Avoid multiple freeze/thaw cycles.