In the 150 years after his work, microscope lenses improved and scientists were able to observe and understand more parts of the cell.
(microscope lenses; improved; T:In the 150 years after his work) (scientists; were; able to observe and understand more parts of the cell) (scientists; to observe; ) (scientists; to understand; more parts of the cell)
microscope lenses scientists scientists scientists
improved were to observe to understand
T:In the 150 years after his work
able to observe and understand more parts of the cell
more parts of the cell