The incorporation of bicarbonate-14C into pyrimidines of the Xovikoff aceites tumor cell has been studied. It was shown that bicarbonate was incorporated into carbamylaspartate and into the C-2 of uracil nucleotides. The incorporation was increased by both glutamine or ammonia; glutamine was the more effective nitrogen donor. Exogenous orotic acid inhibited the formation of undine monophosphate...

AIM To evaluate the push-out bond strength (BS) of direct anatomic posts (DAPs) and conventional fiber posts (CFPs) cemented with different luting agents in different thirds of flared root canals. MATERIALS AND METHODS A total of 60 human single-rooted canine teeth were transversally sectioned 16 mm from the radicular apex. After endodontic treatment, canals were flared with diamond burs. Sam...

A Relative Expression Analysis (RXA) uses ordering relationships in a small collection of genes and is successfully applied to classiffication using microarray data. As checking all possible subsets of genes is computationally infeasible, the RXA algorithms require feature selection and multiple restrictive assumptions. Our main contribution is a specialized evolutionary algorithm (EA) for top-...

In this paper, the nuclear modification factors, RxA, are investigated for pion production in small system collisions, measured by PHENIX experiment at RHIC (Relativistic Heavy Ion Collider). The theoretical framework is parton transverse momentum kT-factorization formalism hard processes fraction, x. Evidence collective expansion and thermal effects pions, produced equilibrium, studied based o...

The enormous amount of biomolecule measurement data generated from high-throughput technologies has brought an increased need for computational tools in biological analyses. Such tools can enhance our understanding of human health and genetic diseases, such as cancer, by accurately classifying phenotypes, detecting the presence of disease, discriminating among cancer sub-types, predicting clini...

Sucrose-density-gradient centrifugation of RNA extracted from HAI strain A virus with phenol revealed 4 distinct com ponents in continuous-flow sjiectrophotometer diagrams. Two of these, not previously described, sedimented at about 16 S and 26 S in association with the components of about 60 S and 5 S reported by others. The 5 S material, like cell transfer RNA, exhibited the amino-acid-accept...

Sucrose-density-gradient centrifugation of RNA extracted from HAI strain A virus with phenol revealed 4 distinct com ponents in continuous-flow sjiectrophotometer diagrams. Two of these, not previously described, sedimented at about 16 S and 26 S in association with the components of about 60 S and 5 S reported by others. The 5 S material, like cell transfer RNA, exhibited the amino-acid-accept...

The effects of l-/3-i>-arabinofuranosylcytosine and of 9-/3-Uarabmofuranosyladenine have been studied on the growth and multiplication of mouse fibroblasta in suspended cell culture. Both compounds i>ermit a considerable enlargement of the cells but sharply inhibit multiplication. The effects of these agents on the syntheses of DXA, RXA, and protein in these cells have also been examined. Both ...