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Anton van Leeuwenhoek. Thonius Philips van Leeuwenhoek, better known as Anton van Leeuwenhoek, (October 24, 1632 - August 30, 1723) was a Dutch tradesman and scientist from Delft, Netherlands. He is known as the Father of Microbiology..
Most of the animalcules are now referred to as unicellular organisms though he observed multicellular organisms in pond water. He was also the first to document microscopic observations of muscle fibers, bacteria, spermatozoa, and blood flow in capillaries (small blood vessels).an Leeuwenhoek married Barbara de Mey in July 1654, with whom he would have one surviving daughter, Maria (four other children died in infancy). That same year he returned to Delft, where he would live and study for the rest of his life. He opened a draper's shop, which he ran throughout the 1650s.