Radioactive Carbon Dioxide Counting by a Plastic Scintillator Cell

Raman-activated cell counting for profiling carbon dioxide fixing microorganisms.

Raman microspectroscopy is a label-free and nondestructive technique to measure the intrinsic chemical profile of single cells. The naturally weak Raman signals hampered the application of Raman spectroscopy for high-throughput measurements. Nearly all photosynthetic microorganisms contain carotenoids that are active molecules for resonance Raman at a 532 nm excitation wavelength. Hence, the ac...

Radioactive Carbon as an Indicator of Carbon Dioxide Utilization: VII. The Assimilation of Carbon Dioxide by Molds.

des Sciences Math6matiques," tome 1, volume 1, page 601, it is added that J. Perott used the term sulerien groups for abelian groups in American Journal of Mathematics, 11, 99 (1889). This matter is somewhat complicated by the fact that C. Jordan used the term abelian group, with a somewhat different meaning from that now commonly assigned to it, in his widely used "Trait6 des substitutions" (1...

Distribution of radioactive carbon dioxide incorporated into rat liver glycogen.

It has been demonstrated that Cl402 administered to fasted rats (2) or incubated with liver slices from fasted animals (3) yields glycogen which is labeled predominantly in carbon atoms 3 and 4. These findings are consistent with the interpretation that CO2 incorporation into glycogen proceeds by a reversal of the anaerobic glycolytic pathway (4). However, during the past several years it has b...

Radioactive Carbon as an Indicator of Carbon Dioxide Utilization: VIII. The Rôle of Carbon Dioxide in Cellular Metabolism.

Excretion of radioactive carbon dioxide by rats after administration of isotopic bicarbonate, acetate, and succinate.

The rate of excretion of C1402 has been followed after the intraperitoneal injection into rats of (1) isotopic bicarbonate, NaHC1403, (2) isotopic acetate, CH3C1400Na, and (3) isotopic succinate, Na00CCH&HzC1400Na. The data so obtained yield information on the rate at which CO2 participates in the metabolic processes of the body, as well as the rate at which isotopic carbon is eliminated follow...