In two recent articles B. Commoner and D. Lipkin (Science, 1949, 110, 31, 41) have
questioned the validity of the microspectrographic techniques of the sort origi-nated by …

E FFORTS TO EXTEND the field of quantitative biochemistry to the level of the single cell
have been based largely on absorption spectrophotometry. This method has suggested a …

There has been considerable interest in recent years in the possibility of determining the
quantities of substances in whole cells or in their parts. One of the most potentially powerful …

Molecular Orientation and Light Absorption. Sign In Folder Preferences Languages New
Features! Help Exit New Search Publications Subject Terms Cited References More …

A significant advance in the technique of histology and cytology is the current trend toward
the use of quantitative methods of studying microscopical preparations; in other words, of …

The determination of the concentrations of various substances in cell structures by the
measurement of their absorption spectra in the cell is becoming a widely used experimental …

The experimental and interpretive procedures necessary to obtain ultraviolet absorption
spectra of structures in intact living cells are described. A simplified microspectrophotometer …

Determination of the Absorpth Spectra of Cell Structzlres 9 small, especially in the long-
wave part of this region. In the ultra-violet, however, there are absorption bands belonging to …

This paper describes a study of the application of electronic methods to the observation and
quantitation of the light absorption and nuclear fluorescence of living cells. This work …

0 likely that the shifts in position of the carbonyl group and adjacent oxygen are, in part,
responsible for the decreased activity of the 0-carbomethoxyethyltrimethyl-ammonium ion …