Immunity to rickettsiae is enhanced by both T-lymphocytes and humoral antibodies; however, the principal effector of rickettsial killing is the macrophage. Lymphokines may play an important role. There is undoubtedly a complex in vivo interaction between the immune, phagocytic, and inflammatory host defenses against these obligate intracellular bacteria.

Remember all the to-do a couple of years ago about whether Florence Nightingale was a suitable role model l. for today's nurses? Tell you what, her common sense opinions on matters related to nurses and nursing seem just as apposite now as they undoubtedly were during her lifetime.

In this short review we study the state of the art of the great challenge of contemporary physics which is reconcile Quantum Theory and its best contribution the Standard Model of Particle Physics and General Relativity. The reconciliation passes undoubtedly through the idea of a fractal universe. Mathematics Subject Classification: Primary 83F05. Secondary 83C45

While circadian rhythms in fluid intake, urine production, and urine storage have been substantiated in diurnal human and nocturnal rodents, the mechanism(s) underlying it is largely unknown. With the elucidations of molecular clockwork and its functional significance in mammals, new opportunities arise to investigate possible circadian control of voiding function and dysfunction, which undoubt...

variants. Consequently, phyB may be an attractive candidate for allele-mining and targeted breeding approaches to reduce, or enhance, thermomorphogenic growth responses in crop species in efforts to breed climate warming-resilient cultivars. These and other matters will undoubtedly be addressed in future research endeavours following the milestone discovery of phyB acting [102_TD$DIFF]as a ther...

Sistemi Informativi LS 2 One image is worth 1,000 words… Undoubtedly, images are the most widespread MM data type, second only to text data Thus, it's not surprising that most efforts related to MMDB's have concentrated on images, in particular: Automatic extraction of features Similarity measures Indexing … Thus, let's move to see which are some basic features of images…

Transfusion-related acute lung injury (TRALI) has emerged as one of the leading causes of transfusion-related morbidity and mortality and is undoubtedly under diagnosed. It is a serious pulmonary syndrome that can lead to death if not recognised and treated promptly. The diagnosis of TRALI is based primarily upon clinical signs and symptoms and is, in part, a diagnosis of exclusion.

This surgical technique has permitted re-entry into the intrahepatic and extrahepatic biliary tree for the purpose of dilatation and the manual propulsion of debris through a ductal anastomosis. The method undoubtedly has other applications in the treatment of complicated biliary duct problems.

The influence of technology in our lives emerges the need and the willingness to use it in education too. The possibility of using the Internet as an educational source is undoubtedly an interesting question. Our Web presentation focuses on the educational parameters, which could be used in the Internet, by following the journey of light, as a natural substance, through time.

A switch in cellular identity in budding yeast requires the ubiquitin-dependent elimination of pre-existing master regulators encoded by the MAT locus. Failure to disassemble the prior state not only impairs the cell type transition but imparts a hybrid cellular fate. This theme will undoubtedly arise in many developmental and disease contexts.