J. R. Coulter's research while affiliated with University of California and other places
What is this page?
This page lists the scientific contributions of an author, who either does not have a ResearchGate profile, or has not yet added these contributions to their profile.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
It was automatically created by ResearchGate to create a record of this author's body of work. We create such pages to advance our goal of creating and maintaining the most comprehensive scientific repository possible. In doing so, we process publicly available (personal) data relating to the author as a member of the scientific community.
If you're a ResearchGate member, you can follow this page to keep up with this author's work.
If you are this author, and you don't want us to display this page anymore, please let us know.
Publications (6)
A new flow‐system instrument for quantitative analysis and sorting of microscopic particles, particularly biological cells, based on multiple measurements of physical and biochemical properties has been developed. Cells stained with fluorescent dyes in liquid suspension enter a unique flow chamber where electrical and optical sensors measure cell v...
An electrical resistance counter of the Coulter type has been designed to count particles intended for animal injections and to dispense them into a package (a length of polyethylene medical tubing). The packaged particles are used for injections at a later date. In a typical application, two thousand 10 μ spheres can be counted and loaded into a 6...
Theory predicts that small angle light scattering by spherical particles of 5 to 20 μ diam is nearly proportional to volume and insensitive to particle refractive index. A flow system photometer with helium‐neon laser light source measures the scattering between 0.5 and 2.0° from individual particles at 10<sup>4</sup> to 10<sup>5</sup>/min. Volume...
A high-speed flow system for quantitative determination of fluoresence of cells containing fluorochrome has been developed. Feulgen-DNA distributions in populations of tissue culture cells and human leukocytes havebeen measured at a rate of 10(4) to 10(5) cells per minute and compare well with results of other independent methods.
The disclosure relates to an apparatus and method for electrically analyzing biological cells. An orifice having two potential sensing electrodes is immersed in a container of saline solution in which cells to be analyzed are suspended. The entrance of the orifice communicates with the saline solution and the exit of the orifice communicates with a...
Citations
... Red fluorescence represents relative photopigment abundance (Lesser, 1996;Lee et al., 2012;Cooper et al., 2014). Side scatter is a representation of cell shape or roughness, and forward scatter is a representation of cell size or cell volume (Mullaney et al., 1969;Steen, 1980;Shapiro, 2003;Tzur et al., 2011). The full protocol with details on sample preparation, data curation, and analysis is publicly available on protocols.io ...
... Immunological naming strategies have additionally been applied to the division of explicit kinds of cells. Cells named with fluorescent antibodies or fluorescent immune microspheres have been isolated from unlabeled cells by fluorescence-initiated cell arranging [40,41]. Cells explicitly named with these reagents have been isolated from unlabeled cells based on their maintenance in attractive fields [42]. ...
... In the history of cytometry technology, the development of flow cytometry was a watershed moment, thousands of cells to be measured in seconds. [38][39][40][41][42][43] As early as the 1960s, a group of Review researchers in the United States developed the first automated cell counting systems using two different physical principles: the first based on impedance measurement (Coulter's principle), and the second devised by Herzenberg based on optical analysis (light scatter). 26 The first family of instruments evolved into the so-called cell counters, which are still widely used in all analytical laboratories for automated counting, mainly of the various cell subpopulations in the blood (or other body fluid). ...