The effect of different fractions enriched in soluble fiber obtained from artichoke using citric acid or citric acid/hemicellulase on the selective growth of Lactobacillus plantarum 8114 and Bifidobacterium bifidum ATCC 11863 was evaluated. Gompertz modeling of Lactobacillus plantarum 8114 growth showed a higher specific growth rate (μ: 0.16 h(-1)) in the presence of fractions isolated from ste...

The physiological effects of humic substances (HS) on some aspects of plant growth and metabolism are examined. Evidence has been presented on that the effect of HS on plant growth depends on the source, concentration and molecular weight humic fraction. While a low molecular size (LMS , 3500 Da) fraction easily reaches the plasmalemma of higher plant cells and, in part, is taken up into them, ...

The kinetics of ageing of normal mouse embryo fibroblast cells in culture have been determined. The growth pattern during every passage was established. It was observed that the growth pattern was not exponential, but that the growth rate declined progressively both within and with every passage. We also estimated the cell cycle parameters using the Fraction of Labelled Mitoses method at every ...

Using the heterotopically transplanted rat urinary bladder system, we previously showed that normal urine has a tumor-enhancing effect on carcinogen-initiated unit helium. In an attempt to isolate a urinary growthstimulating (tumor-enhancing) faclor(s), urine was first fractionated by Bio-Gel I'-100 column chromatography, and each fraction was tested for inducibility of ornithine decarboxylase ...

Using the heterotopically transplanted rat urinary bladder system, we previously showed that normal urine has a tumor-enhancing effect on carcinogen-initiated unit helium. In an attempt to isolate a urinary growthstimulating (tumor-enhancing) faclor(s), urine was first fractionated by Bio-Gel I'-100 column chromatography, and each fraction was tested for inducibility of ornithine decarboxylase ...

P olicymakers who are concerned with understanding the cyclical state of the economy will be interested in identifying the sustainable rate of employment growth. If productivity growth is taken to be exogenous, the rate at which jobs are created will determine growth in output. Assuming that employment is measured reasonably well, a policymaker armed with a measure of trend job growth will be a...

OBJECTIVE To evaluate in-vivo placental perfusion fraction, estimated by magnetic resonance imaging (MRI), as a marker of placental function. METHODS A study population of 35 pregnant women, of whom 13 had pre-eclampsia (PE), were examined at 22-40 weeks' gestation. Within a 24-h period, each woman underwent an MRI diffusion-weighted sequence (from which we calculated the placental perfusion ...

Thirty four cases of invasive breast carcinoma were analysed for heterogeneity of Ki-67 reactivity in a tumour, and proliferative activity in various histological subtypes was compared. The growth factions determined in areas of central and peripheral tumour were the same. Mucinous and lobular carcinoma showed lower Ki-67 activity than ductal carcinomas. When ductal carcinomas were subdivided a...