Electric birefringence studies on two strains of tobacco mosaic virus.
1957
A NORMAN, and
J A FIELD
UI
MeSH Term
Description
Entries
D001718
Birefringence
The property of nonisotropic media, such as crystals, whereby a single incident beam of light traverses the medium as two beams, each plane-polarized, the planes being at right angles to each other. (Cline et al., Dictionary of Visual Science, 4th ed)
Minute infectious agents whose genomes are composed of DNA or RNA, but not both. They are characterized by a lack of independent metabolism and the inability to replicate outside living host cells.