A comparative study of the ligand-binding properties of human serum albumin was performed by the technique of affinity chromatography with the protein attached to immobilized Cibacron Blue F3GA (Blue Sepharose), or covalently immobilized on Sepharose. The binding strength of octanoate, decanoate and dodecanoate is much weaker when human serum albumin is attached to immobilized Cibacron Blue, in...

Blue light-induced oxygen uptake of the colorless mutant of Chlorella kessleri (No. 9.80) was 30-40% higher in the presence of exogenous glycine than in its absence. None of the other amino acids tested had this effect. Moreover, mutant cells in which glutamine synthetase was inhibited by methionine sulphoximine, accumulated approximately 65% more ammonium ions under blue irradiation in the pre...

Based on the metachromatic property of Toluidine Blue O, three, convenient agar-diffusion methods have been developed that enable detection of the nuclease of Staphylococcus aureus at concentrations as low as 0.005 mug/ml in agar and broth cultures. The interactions of agar and deoxyribonucleic acid with Toluidine Blue O are discussed.

The mechanisms by which different light spectra regulate plant shoot elongation vary, and phytohormones respond differently to such spectrum-associated regulatory effects. Light supplementation can effectively control seedling growth in Norway spruce. However, knowledge of the effective spectrum for promoting growth and phytohormone metabolism in this species is lacking. In this study, 3-year-o...

Blue cheeses are those whose matrix is veined with a blue, blue-grey, or blue-green colour due to the development of Penicillium roqueforti. There more than 45 varieties blue cheese produced worldwide, some distinct features, although manufacture process similar. In addition P. roqueforti, complex microbial populations interact and succeed throughout manufacturing ripening at cheese’s surface (...

A soluble viral antigen with possible diagnostic utility was obtained from blue-tongue virus-infected lamb kidney cells. It is a noninfectious proteinaceous substance without nucleic acid. The antigen is immunologically identical to one component of the viral particle, and in agar-gel diffusion tests it reacted with antiserum against several blue-tongue virus strains.