Clinical trials are (performed in humans): phase 1, phase 2, phase 3, post-market studies.
Preclinical studies (performed on animals)
Cellular tests, animal experiments, and in vitro experiments are differentiated by the object of observation. That is, the purpose of classification is different from the above.
For details, please read more about the guidelines of the State Bureau, which will help you clarify the concepts. (Database on the State Food and Drug Administration website, or use the website to search for relevant articles.)