But the galactose one phosphate will not be able to form these molecules here. And so what that means is, as we ingest the lactose, if we have classic galactosemia, there will be a build up of this galactose as well as the galactose one phosphate. And that can be very toxic to our body. Why? Well, let's take a look at the following conversion. So, if there's a build up of galactose inside our body well, first of all, this is a cyclical galactose and this is its open chain confirmation.