Quantitativein situnanoindentation in an electron microscope

the scanning electron microscope

it is only thirteen years since the scanning electron microscope has been available commercially. yet, even in this short period of time, this instrument has been a powerful tool in the investigation of topography, electrical and magnetic properties, crystal structure, cathodoluminescent characteristics etc. of solid specimens. today, this type of microscope has opened its place alongside the c...

Electron Microscope

An Electron Microscope Study of Isolated Chromosomes.

HE limitation in the penetrating power of electrons is one of the most T serious obstacles in the study of chromosomes by electron microscopy. Chromosomes are generally larger than 0.2p in diameter and are nearly opaque to electron penetration. At various stages of the nuclear cycle, however, chromosomes change their size and shape. Dividing chromosomes are generally largest and “resting” chrom...

An Electron Microscope Analysis of Nerves Infected

The demonstration with the electron microscope that the nerve contains a fibrous component, probably axonic, the so called neurotubules (De Robertis and Schmitt (1)) has led to the supposition that these structures might be involved in the transfer of virus particles through the axon. This hypothesis was first tested with the poliomyelitis virus (2). In experimentally infected monkeys, neurotub...

An Electron Microscope Study of Rhabdomyosarcoma.

An electron microscope study of idtraihin sections of two rhabdomyosarcomas revealed the presence of cytologic characteristics previously described in neoplasias: nuclear envelope invagination, reduction in number of organelles, reduced size of mitochondria, sioollen mitochondria. In addition, one group of seven centrioles was observed and many cells revealed the presence of aggregates of small...