A new method of measuring the growth of Lactobacillus leichmannii is reported. Its adoption for the estimation of serum vitamin B(12) levels shortens the incubation period required to five hours at 45 degrees C. The method is compared statistically with a standard method of estimation, requiring incubation at 37 degrees C., by duplicate determinations on 106 hospital patients. The significance ...

The final stages in the total synthesis of vitamin B12 are reported. It was particularly appropriate, I think, and most pleasant for us this morning to see the splendid film provided by our Russian friends, in which the very successful Symposium at Riga was enshrined for posterity. Appropriate in the sense, from my own point of view, that I did report there at Riga, on the progress we had made ...

as we know, no attempts to compare quantitatively the expected amount prescribed, on the basis of good clinical practice, with that actually prescribed. There are in general three reasons for this-ignorance of the prevalence of common diseases, the lack of specificity of particular drugs for particular diseases, and the lack of standardization of therapy. Such a study requires a drug which is p...

Introduction: Since pharmaceutical syrups are widely taken by children in Iran, drop of pH in oral cavity and dental decay resulted from the syrups are of high importance. This research aims to study buffering properties of saliva when in contact with some of vitamin syrups available in pharmaceutical market of Iran. Methods: In the present study, 1 milliliter (ml) of 6 samples of vitamin sy...