Cells were discovered by Robert HOOKEN in 1665, but SCHLEIDEN and SCHWANN in 1839 were the first to put forward a clear cell theory, stating that all living things were cellular.

• 细胞在1665年被英国学者胡克所发现，1839年施旺和施莱登第一次明确的提出了细胞学说，即所有的生物体都是由细胞组成的。