Root uptake of 14C-labeled glucose by radish seedling.

Uptake of glucose-l-14C by Pullularia pullulans.

Pullularia pullulans cells were grown in a medium containing yeast extract, malt extract, glucose, and nutrient salts, in addition to glucose-1-(14)C. The lipids extracted from the cells were fractionated by use of a single column packed with silicic acid. Of the total radioactive carbon added to the culture medium, the neutral lipid fractions contained 24.8%, whereas the phospholipid portions ...

Root-uptake of 14C derived from acetic acid by root vegetables

Sand culture using radish (Raphanus sativus L.) and hydroponics using carrot (Daucus carota L.) were conducted to examine root-uptake of carbon and its assimilation in the form of 14C-acetic acid. 14C-acetic acid (1, 2-14C, radioactivity: 74 kBq) was added to each pot. Radishes were grown under the dark conditions or the light conditions for 24 h. Carrot were grown under the light conditions af...

Uptake and metabolism of 14C-labeled oleic acid by atherosclerotic lesions in rabbit aorta.

Decreased uptake of 14C-labeled dicarboxylic amino acids in rapidly growing hepatomas.

In contrast to the increased uptake of amino acids which has been found in many neoplastic cells, we have observed a decrease in the net uptake of [14C]aspartate and [14C]glutamate in rapidly growing hepatomas relative to rat host liver. When measured 10 min after s.c. injection, the radioactivity from 14C-labeled dicarboxylic amino acids was greater in liver than in all other tissues examined ...

Uptake of 14C-labeled Dicarboxylic Amino Acids in Hepatocytes and Hepatoma Cells1

In previous studies, we observed decreased uptake of 14Clabeled t-aspartate and L-glutamate in s.c. transplants of sev eral rapidly growing hepatomas relative to that in normal liver. The present report extends these observations to isolated cells and indicates that circulation differences cannot be the major factor. Mean net uptakes for the two dicarboxylic amino acids in cells from the rapidl...