Matt continued contemplating the upgrade tree as he stepped into the lab. It was time for him to start feeding on Alexandria's blood samples. Previously, he thought that the living metal cells in her were causing the rapid evolution in her physique, but it turned out that she had been parasitized long ago. Matt wasn't certain what would happen when he fed on her blood since there was no precedent for multiple parasites in the game.
He entered the walk-in freezer and pulled out a secure container. After inputting a password and biometric information, it opened revealing four slots midst black insulating material. The box itself had its own internal battery and cooling. After opening the large time-delayed safe, Matt pulled out four vials and placed them in the box. Once that was finished, he closed everything up and went to check on Martha.
I like to use a little Prussian Blue to darken the corners. Just a little Prussian Blue. And if you don't like your tree? You can just make it taller. There are no mistakes, only happy accidents.