This is why I think it is symbolic. In the process of Transubstantiation, I believe, that God lets it be a reminder of what the original Supper was about. I do not think that Transubstantiation is some scientific anomaly, but just the process of a small miracle happening that will spiritually strenghten those who take the Communion. I Corinthians 11:23-25, talks about a new covenant during Transubstantiation, not a scientific process.