Complex sentence: When his researchers try the nutrient, they develop runaway acromegaly and one of them is driven mad, half destroys the lab (freeing the animals) and attacks Deemer and injects him with the solution.
Split into simpler sentences: When his researchers try the nutrient, they develop runaway acromegaly. One of them is driven mad, half destroys the lab (freeing the animals), and attacks Deemer, injecting him with the solution.