Transplantation of a human lymphoma to the cheek pouches of unconditioned, adult golden hamsters resulted in permanently transplantable tumors which grow progressively and kill their hosts. This tumor system, GW-478, has a hamster-specific láclate dehydrogenase isoenzyme mobility pattern and both human and hamster glucose 6-phosphate dehyrogenase enzyme profiles when propagated in the hamster ...

Brief treatment of iron-saturated hen ovotransferrin with dithiothreitol selectively cleaves the disulphide bridge between residues 478 and 671, which is in the C-terminal domain of the protein. The reduced alkylated protein is less stable than the native protein, and its iron-binding properties are different. A fluorescent derivative was prepared by coupling N-iodoacetyl-N'-(5-sulpho-1-naphthy...

Plants assimilate inorganic sulphate for the bio­ synthesis of sulphur containing compounds. The enzymes required for reduction are found pre­ dominantly in the plastids which provide the necessary energy and the reductants. Sulphate re­ duction like nitrate or carbon dioxide assimilation is endergonic; for comparison, N 0 3 reduction to ammonia requires +347 kJ mol1 and C 0 2 re­ duction +478 ...

We present a detailed X-ray study of the intracluster medium (ICM) of the nearby, cool-core galaxy cluster Abell 478 (z = 0.088), based on Chandra and XMM-Newton observations. Using a wavelet smoothing hardness analysis, we derive detailed temperature maps of A478, revealing a surprising amount of temperature structure for an apparently well relaxed cluster. We find the broad band Chandra spect...

The Wind spacecraft carrying the Transient Gamma Ray Spectrometer (TGRS) moves in an extremely elliptical orbit that largely avoids Earth's trapped radiation belts and albedo γ-radiation. The TGRS therefore enjoys a relatively low level of background that is also extremely stable. We show how this stability enables modeling of the time variability of background lines, which in turn enables a no...

Abstract The use of less effective emotional regulation strategies, such as distraction, may relate to greater reliance on avoidance behavior under conflict. Tulsa 1000 participants (n = 478) were recruited trans diagnostically and completed an approach conflict (AAC) task. Following the task, reported their distraction strategy. Quantile regression showed negative main effects age This suggest...

Boutonneuse fever caused by Rickettsia conorii is transmitted mainly by the brown dog tick, Rhipicephalus sanguineus. We collected 540 ticks in Marseille, France, and tried to isolate as many strains of rickettsia as possible. Ticks were evaluated for the presence of rickettsia by the hemolymph test and by a new culture system, the centrifugation-shell vial technique. We avoided contamination i...