GENERAL HISTOLOGY

Detailed explanation-1: -Antonie van Leeuwenhoek used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa.

Detailed explanation-2: -Van Leeuwenhoek discovered “protozoa”-the single-celled organisms and he called them “animalcules". He also improved the microscope and laid foundation for microbiology. He is often cited as the first microbiologist to study muscle fibers, bacteria, spermatozoa and blood flow in capillaries.

Detailed explanation-3: -Antony Von Leeuwenhoek is known as the father of microscopy. He was a Dutch tradesman and scientist. He developed a simple microscope using only a single biconvex lens.

Detailed explanation-4: -About 350 years ago, lens grinder and scientist Anton van Leeuwenhoek peered into his microscope at a sample of pond water and discovered a whole world of creatures too small to see with the unaided eye.