The preferred method to show the presence of influenza A virus is to demonstrate the possession of the nucleocapsid or matrix antigens which are shared by all influenza A virus. This is generally done in immunodoublediffusion tests involving either concentrated virus preparations or extracts from infected chorioallantoic membranes.
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
