Research acquired where to use

It says I have research acquired 3/3 for protoss or zerg and I can’t see where to use the research. I have completed the missions of wings of liberty already. I looked everywhere and there is no Laboratory anymore to use research.

Maybe it’s a armor/weapon upgrades in Evolotion chamber/Spire for Zerg and Forge/Cybernetics core for Protoss that are researched during each mission?