Antonie van Leeuwenhoek was the first person to observe microorganisms in 1674 using a single-lens microscope at up to 270x magnification. He discovered that organisms existed in places previously thought to be empty, observing that biological material was not made of hollow cavities but contained internal structures.

1. LƯLƯ C SC S TT BBÀÀO HO H CC
16741674 AntonieAntonie van Leeuwenhoek, KHVvan Leeuwenhoek, KHV
X270 (x500)X270 (x500) quanquan ssáátt tt bbààoo ngng vv tt ⇨⇨
““ttếế bbààoo khôngkhông phphảảii llàà xoangxoang rrỗỗngng mmàà ccóó
ccấấuu trtrúúcc phphứứcc ttạạpp””
Antonie van Leeuwenhoek
(1632 – 1723) is commonly
known as "the Father of
Microbiology",
Microscopic Section through one year old ash (Fraxinus) wood