BACKGROUND Stem cell therapies appear promising for treating certain neurodegenerative disorders and molecular imaging methods that track these cells in vivo could answer some key questions regarding their survival and migration. Bioluminescence imaging (BLI), which relies on luciferase expression in these cells, has been used for this purpose due to its high sensitivity. NEW METHOD In this s...

Tests of the null hypothesis of stationarity against the unit root alternative play an increasingly important role in empirical work in macroeconomics and in international finance. We show that the use of conventional asymptotic critical values for stationarity tests may cause extreme size distortions, if the model under the null hypothesis is highly persistent. This fact calls into question th...

The urinary excretion of fibrin/fibrinogen degradation products (F.D.P.) of 81 human cadaver kidney transplants has been measured serially by the techniques of tanned red cell haemagglutination inhibition immunoassay and immunonephelometry. Acute rejection episodes in functioning transplants have been associated with increased F.D.P. excretion which in 80% of cases has preceded clinical diagnos...

Normal and genetically engineered skeletal muscle cells (myoblasts) show promise as drug delivery vehicles and as therapeutic agents for treating muscle degeneration in muscular dystrophies. A limitation is the immune response of the host to the transplanted cells. Allogeneic myoblasts are rapidly rejected unless immunosuppressants are administered. However, continuous immunosuppression is asso...

BACKGROUND AND PURPOSE This is a follow-up article to "Fate of Submitted Manuscripts Rejected from the American Journal of Neuroradiology: Outcomes and Commentary." The purpose of this study was to quantify differences in citation frequency between manuscripts published in the American Journal of Neuroradiology (AJNR) and those published after AJNR rejection and to understand citation frequency...

This study analyzed the relationship between social interaction styles and sociometric types in a sample of 1,349 (51.7% boys, and 48.3% girls) Spanish adolescents. The results revealed that the proportion of prosocial adolescents nominated as liked by peers was significantly higher than prosocial with social anxiety, whereas the proportion of aggressive adolescents nominated by peers as reject...