Hey all,
I'm not sure Agito knew about the regenerative properties of that extent. He only suspected in the 2005 series.
Its feasible he was just watching the fight to discover the abilities if the enzyme 1, once again using Sho as cannon fodder to get what he wants.
I don't believe that the entire fight was an elaborate ploy to smuggle Sho in the building.
I honestly think he was making the best of the hand he was dealt.