At the risk of implying you haven't read the article, these experiments took place while those astronauts (specifically the Apollo 11 to 14 missions) were in qu

At the risk of implying you haven't read the article, these experiments took place while those astronauts (specifically the Apollo 11 to 14 missions) were in quarantine. They didn't know whether lunar dust could have some other adverse effect on the biosphere. They stopped doing the experiments after Apollo 14 in 1971.