Mineralogical transformations of 2-line ferrihydrite were studied under oxic and Fe-reducing conditions to establish the role, if any, of 6-line ferrihydrite (“well” organized ferrihydrite) in the reaction pathway and as a final product. In oxic experiments, concentrated suspensions (0.42 mol/L Fe in 0.1 mol/L NaClO4) of freshly synthesized 2-line ferrihydrite, with and without 3% Ni, were aged...

We present data demonstrating that the cytotoxic compound [Pt2Cl4(diminazene aceturate)2]Cl4z4H2O (Pt-berenil) circumvents cisplatin resistance in ovarian carcinoma cells. The analysis of the interaction of Pt-berenil with linear and supercoiled DNA indicates that this compound induces the formation of a large number of covalent interstrand cross-links on DNA and that this number is significant...

The technique of measuring deoxyribonucleic acid (DNA) complimentarity described by B. J. McCarthy and E. T. Bolton (Proc. Natl. Acad. Sci. U.S. 50:156, 1963) has enabled genetic comparisons of various bacteria, viruses, mammals, and other organisms. DNA homologies existing among five species of bacteria now classified in the genus Pasteurella (Bergey's Manual, 7th edition) were studied. The sp...

The oligomerization of activated Dand Land racemic guanosine-5*-phosphoro-2-methylimidazole on short templates containing Dand L-deoxycytidylate has been studied. Results obtained with D-oligo(dC)s as templates are similar to those previously reported for experiments with a poly(C) template. When one L-dC or two consecutive L-dCs are introduced into a D-template, regiospecific synthesis of 3*-5...

•Lamellar hydrogels are formed utilizing host-guest anion recognition in water•Selective hydrogelation the presence of iodide or perchlorate was demonstrated•Macrocyclic receptor used as a low molecular weight hydrogelator•Hydrogels released choline derivatives via cation metathesis Hydrogel materials that utilize chemistry for their formation have been extensively investigated cationic and neu...