school shark
... that the school shark was at one time used as a source of vitamin A as its liver was shown to have higher levels of this vitamin than any other fish tested?
... that the <b id="mwAqc"><a href="./School_shark" id="mwAqg" rel="mw:WikiLink" title="School shark">school shark</a></b> was at one time used as a source of <a href="./Vitamin_A" id="mwAqk" rel="mw:WikiLink" title="Vitamin A">vitamin A</a> as its <a href="./Liver" id="mwAqo" rel="mw:WikiLink" title="Liver">liver</a> was shown to have higher levels of this vitamin than any other fish tested?