Microscopium

An engraving depicting Leeuwenhoek's observation

Anton van Leeuwenhoek (1632-1723), Dutch pioneer

Sagittarius and Corona Australis, Microscopium, and Telescop

RAMON Y CAJAL, Santiago (1852-1934). Spanish

RAMON Y CAJAL, Santiago (1852-1934). Spanish

RAMON Y CAJAL, Santiago (1852-1934). Spanish

Scientific experiments in the jungle in the early

LEEUWENHOEK, Antony van (1632-1723). Dutch naturalist

KOCH, Robert (1843-1910). German physician, discoverer

Alexander Fleming

MARANON, Gregorio (1887-1960). Spanish doctor