A key tool in laboratories and biology classrooms, the microscope produces enlarged images of small objects. Its inventor is not conclusively known, so it is credited to two people—Zacharias Janssen around 1590 and Galileo around 1610. Probably the best known type is the compound microscope, which consists of an objective lens and an eyepiece and is widely used in the examination of plant and animal cells and bacteria. Who helped popularize the microscope by using it to discover red blood cells? Discuss
Source: The Free Dictionary