Special characters xml parsing issue in iphone

When i try to parse xml containing email address say john@abc.com, it just shows "abc.com". How can i make it to show the complete email address. In other cases i've removed some special charcters by using the following:-

 string=[string stringByReplacingOccurrencesOfString:@"$" withString:@""];

but here i've to include the symbol "@" and characters before it.

Thanks for any help.