Lab

Description
"In the Lab you can upgrade milk-guns, slingshots, glue guns and bottles. The more upgrades you do, the harder your cows will fight!"

So, the Lab is the place where we can improve all of the towers. The researches add +10% to various attributes: increase damage, firing speed, attack radius. Or adds splash damage (+50% larger area of effect), and double strike (+10% chance of double damage).

Lab upgrades
The next table shows, how many time and elixir takes to upgrade the Lab to higher levels. So there are the stats of building upgrades.

Researches
And here is the information about the researches, which can find in the Lab.