'@' is the wild-card character. Thus "Smith@" searches for anyone named "Smith"; "Bro@" searches for anyone whose last name begins "Bro".
The names of the states in the US are spelled out in full; they are not abbrevated. Thus, "New York" will find isolates from New York, but "NY" will not.
To search for fields that are blank, use the search term "blank". Thus a search for isolates that do not have an identified species will have "blank" as the species search term.
The results are returned in PDF format. Click on the image below to download Adobe Acrobat Reader.