Today, I finished what I started yesterday in separating the lignin value from the fungus and putting it in the background. Now, the fungus spreads evenly across the simulation as it chases the glucose produced from the enzymes breaking down the lignin, which fits reality much more closely in how it creeps across the wood in the background, much like real mold. 
Because lignin is now tied to the background, it means more is readily available, so more of it gets broken down into glucose, which is then used by the fungus to stimulate growth, leading to a much higher amount, about 8 times as much. I expect this is how it is in reality as well, as the cells should have a fairly high density. With this crucial step, the final model nears completion. Tomorrow, before the last meeting, Emily and I will combine codes one last time.
Dr. Aziz told us today that what we have completed so far is similar to what he would expect a graduate student to do, and he said that we would be receiving high marks if we were his students.