very similar to juan francisco casas.
http://www.juanfranciscocasas.com/

Tyrell: Wouldn't obstruct replication, but it does give rise to an error in replication so that the newly formed DNA strand carries the mutation and you've got a virus again. But, uh, this-- all of this is academic. You were made as well as we could make you.

Roy: But not to last.

Tyrell: The light that burns twice as bright burns half as long. And you have burned so very very brightly, Roy. Look at you. You're the prodigal son. You're quite a prize!