Still no luck.
Here is another piece to this puzzle.
If I do:
$_xml .="<description>".htmlentities($info['content'])."...</description>\r\n";
I can't get the punctuations (such as single quote) to work. So that I have: Crohn�s disease.
But if I use another db field:
$_xml .="<description>".htmlentities($info['title')."...</description>\r\n";
Then everything works fine and I am able to get: Crohn's disease.
Because of that, I got both, 'content' and 'title' as the same field type (text). But I still have the same bad result.