<Tr> <Th_colspan="2"> Rudolf Virchow </Th> </Tr> <Tr> <Th> </Th> <Td> (1821 - 10 - 13) 13 October 1821 Schivelbein, Pomerania, Kingdom of Prussia </Td> </Tr> <Tr> <Th> </Th> <Td> 5 September 1902 (1902 - 09 - 05) (aged 80) Berlin, German Empire </Td> </Tr> <Tr> <Th> Resting place </Th> <Td> Alter St. - Matthäus - Kirchhof, Schöneberg 52 ° 17 ′ N 13 ° 13 ′ E ﻿ / ﻿ 52.28 ° N 13.22 ° E ﻿ / 52.28; 13.22 </Td> </Tr>

Who were the scientist who contributed to the cell theory and what role did they play