SINCE Caspersson's pioneer work in the field of microspectroscopy, several complex
electrical and optical instruments have been devised in order to study the absorption of …

The object beam and the reference beam from light source are applied alternately, 50 cps, to
the photocathode of the same multiplier. If the beam intensities are different, there appears …

MICKOSPECTROPHOTOMETRY is an effective means of estimating the amounts of various
constituents of single cells. There are, however, many factors which can influence the overall …

I It-N u ra microspectrophotometric work for quantitative purposes the measuring instruments
must fulfil a large number of requirements. These have been described earlier (1). Hitherto …

~~ ICR~ SPECTR~ METRY is one of the most important methods for measuring the total
amount and distribution of substances in individual cells (eg 2, 3, 8). While in biochemistry …

THIS communication describes the use of a simple microspectroscopic method which
permits the recording of the ultra-violet and the visible absorption characteristics of cells or …

THE study of various problems with ultramicrospectrographic procedures very often
necessitates the determination of the total content of a whole cell of a certain light absorbing …

A photographic method of microspectrography applicable to living cells is described.
Absorption spectra and the total amounts of absorbing substance in living chick fibroblast …

IN the ultra-microspectrophotometer for high resolution the absorption spectra of biological
objects can be determined by utilizing the entire resolving power of the microscope. In order …

CURVES giving the light transmission along a measuring line traversing a microscopic
object are obtained with the recording ultramicrospectrophotometers [l, 2, 4, 51. These …