For the first time, bacteria were seen through an optical microscope and described by the Dutch naturalist Anthony van Leeuwenhoek in 1676.
ເປັນຄັ້ງ ທໍາ ອິດ, ເຊື້ອແບັກທີເຣັຍໄດ້ຖືກເບິ່ງຜ່ານກ້ອງຈຸລະທັດ optical ແລະອະທິບາຍໂດຍນັກ ທໍາ ມະຊາດຊາວຮອນແລນ Anthony van Leeuwenhoek ໃນປີ 1676.