Should I use addslashes function when I using PDO?

I heard that PDO defends Injection Attack automatically. So, I can make a query without ' mark. Then, should I use addslashes function when I using PDO? I means... <?php $s = $d->prepare("SELECT * FROM `table` WHERE `no`=:n"); $s->bindParam(":n", $data); $data = $_GET["param"]; $s->execute(); ?> or <?php $s = $d->prepare("SELECT * FROM `table` WHERE `no`=:n"); $s->bindParam(":n", $data); $data = addslashes($_GET["param"]); $s->execute(); ?>