<synset id="n01340522" type="n">
<lex_filenum>05<lex_filenum/>
<word lex_id="0">polyoma<word/>
<word lex_id="0">polyoma virus<word/>
<pointer refs="n01340155">Hypernym<pointer/>
<def>a virus the can initiate various kinds of tumors in mice<def/>
<synset/>