Francesco Patrizi: Philosopher of the Renaissance

Francesco Boato

Francesco Blast

Hog thyroid tautomerase (EC 5.3.2.1, phenylpyruvate keto-enol isomerase), an enzyme which is believed to play a role in the biosynthesis of thyroxine, has been purified over lOOO-fold. The purification procedure involves a heat step at 70”, gel f&ration on Sephadex G-100, ion exchange chromatography on carboxymethyl Sephadex C-50, and, finally, gel titration on Sephadex G-50. The enzyme is homo...

De Francesco 8 pages

Hepatitis C virus (HCV) will continue to be a serious global health threat for many years to come because of the chronic nature of the infection, its high prevalence and the significant morbidity of the resulting disease. Recently, a small number of molecules have produced encouraging results in proof-of-concept clinical trials. At the same time, preclinical evidence is accumulating that develo...

Thomas Young, Natural Philosopher

Dr. Willmer's second edition of this little book fulfills his stated purpose ... to correlate some of the numerous fragments of scattered data which have so far been obtained and to orientate them in such a way as to illustrate the more fundamental contributions which the method has made to physiological knowledge, and to show the manner in which a change of outlook has already been brought abo...

Joseph Priestley, natural philosopher.

In this two hundredth anniversary year of his death, we are met to celebrate the life and career of Joseph Priestley—and most of us celebrate the wrong man, for the wrong reasons. We celebrate the pneumatic chemist who, in a flurry of random experiments made over a period of five years, isolated and partially identified nine new gases, including oxygen—and the man who spent roughly five times a...