Who discovered living cells?

Anton Von Leeuwenhoek was the first person to observe living cells under a microscope. In 1674, he described the algae Spirogyra and was the first to observe a live cell. Although Robert Hooke coined the term "cells" in 1665 after observing the structure of cork under a microscope, he did not observe living cells and was unaware of organelles within cells. Robert Brown, a Scottish botanist, discovered the cell nucleus in 1831, and Jan Evangelista Purkinje, a Czech physiologist, was the first to use the term "protoplasm" to describe the substance inside cells in 1839.