GENERAL HISTOLOGY

Detailed explanation-1: -A scanning electron microscope (SEM) directly produces an image of the three-dimensional structure of the surface of a specimen.

Detailed explanation-2: -In a transmission electron microscope, the electron beam is transmitted through the cell and provides details of a cell’s internal structures.

Detailed explanation-3: -The transmission electron microscope is used to view thin specimens (tissue sections, molecules, etc) through which electrons can pass generating a projection image. The TEM is analogous in many ways to the conventional (compound) light microscope.

Detailed explanation-4: -As a result, TEM offers invaluable information on the inner structure of the sample, such as crystal structure, morphology, and stress state information, while SEM provides information on the sample’s surface and its composition.

Detailed explanation-5: -Transmission electron microscopy is a major analytical method in the physical, chemical and biological sciences. TEMs find application in cancer research, virology, and materials science as well as pollution, nanotechnology and semiconductor research, but also in other fields such as paleontology and palynology.