We describe an immunohistochemical method, using monoclonal anti-H-2 antibodies, for demonstrating H-2 antigens in cryostat sections of a variety of mouse tissues. Double staining allows simultaneous demonstration of both cell populations in tissue sections from H-2b in equilibrium H-2k aggregation chimaeras.

We research on the possible orientations patterns of a grid graph G, and propose a method for counting certain combinatorial structures over the class of orientations of G. For example, our method can be applied for counting sink-free orientations of G, as well as it can be applied for solving the #2SAT problem for grid Boolean formulas. Our proposal extends the classical transfer matrix method...

Triplex-forming oligodeoxynucleotide 15mers, designed to bind in the antiparallel triple-helical binding motif, containing single substitutions (Z) of the four isomeric alphaN(7)-, betaN(7)-, alphaN(9)- and betaN(9)-2-aminopurine (ap)-deoxyribonucleosides were prepared. Their association with double-stranded DNA targets containing all four natural base pairs (X-Y) opposite the aminopurine resid...

determined by six different analytical methods, i.e., the glucose-oxidase method (G), the autoanalyser method with Hoffman's method (A), the Somogyi-Nelson method (S), the o-toluidine method (T), the Momose's method (M) and the Hage dorn-Jensen method (H). The values determined by micromethods of HagedornJensen, of Momose and of Somogyi-Nelson are usually higher, and the values obtained by o-to...

A regional external quality assessment scheme (REQAS) for anti-HIV serology aimed to objectively assess reliability and quality of HIV testing processes in the African region. This involved the distribution of proficiency testing (PT) panels to participating laboratories from 2002 to 2010. During the survey period, this included 16 distributions of PT panels to 49 laboratories in 30 countries, ...

In this paper, based on sinh-cosh method and sinh-Gordon expansion method,families of solutions of (2+1)-dimensional breaking soliton equation are obtained.These solutions include Jacobi elliptic function solution, soliton solution,trigonometric function solution.