Child, C. M. (1915). Senescence and Rejuvenescence. Chicago: University Press. Dawidoff, C, (1924). C.R. Acad. Sci., Paris, 179, 1222. Frohawk, F. W. (1935). Entomologist, 68, 184. Fukuda, M. & Sibatani, A. (1953). Biochem. J . , Tokyo, 40, 95. Gardner, T. S. (1948). J. Tennessee Acad. Sci. 23, 291. Gardner, T. S. (1948). J . Gerontol. 3, I . Gardner, T. S . (1948). J. Gerontol. 3, 9. Haydak, M...

Child, C. M. (1915). Senescence and Rejuvenescence. Chicago: University Press. Dawidoff, C, (1924). C.R. Acad. Sci., Paris, 179, 1222. Frohawk, F. W. (1935). Entomologist, 68, 184. Fukuda, M. & Sibatani, A. (1953). Biochem. J . , Tokyo, 40, 95. Gardner, T. S. (1948). J. Tennessee Acad. Sci. 23, 291. Gardner, T. S. (1948). J . Gerontol. 3, I . Gardner, T. S . (1948). J. Gerontol. 3, 9. Haydak, M...

Horseradish peroxidase (HRP) histochemistry was used to visualize cells afferent to the bullfrog torus semicircularis. These afferent cells are located in several sensory and nonsensory nuclei. The sensory structures which project to the torus are mainly auditory nuclei, with the major input coming from the ipsilateral superior olive. A very small contralateral projection is also present. In ad...

Sir A very welcome recent editorial in the Journal (Smith, 1991) addressed the important question of the use of LHRH analogues in breast cancer, but we do not consider all of the viewpoints expressed to be either definitive or necessarily correct: Firstly, the word analogues is used throughout as being synonymous with LHRH agonists. This is now a historical viewpoint as pure LHRH antagonists ar...

S ingle-use bioprocessing equipment has come to thoroughly dominate precommercial biopharmaceutical production in only a decade. Yet even with this breakthrough, performance and cost pressures on biopharmaceutical facilities continue to grow. Demands for greater productivity, more efficiency, and lower costs are resulting in an unrelenting push for upstream improvements. Some people in the indu...

Dear Sir: We read with great interest the paper by Gaur et al,1 describing the identification of a stem cell population in neuroendocrine tumors (NETs), named by the authors neuroendocrine cancer stem cells (N-CSC), through their ALDH activity as evaluated by the Aldefluor assay. The authors presented convincing evidence about the stemness properties of these cells, as suggested by their in vit...

H yper text functionalities r epr es ent a for m of the distilled wisdom of the hyper m edia comm unity. G iven the peculiar natur e of the W or ld W ide W eb, it is very difficult to s ucces s fully propos e functionalities that becom e widely accepted. XM LC is a pr ototype of an XML br ows er that, given its m odular ar chitectur e and gener al s cope, can be pr oposed as the bas is for im p...

Animals that communicate by vocal means must make their own calls salient against a background of environmental noise. A new study green tree frogs demonstrates input from the lungs to middle ear reduces interfering noise and thus enhances call detection. Male are highly vocal. They produce high-intensity, distinct advertisement attract females for mating defend calling spots rival males. Frogs...

Though evaluat ion funct ions have been used in many game-playing and problem-solving programs the aim has genera l ly been to const ruct su i tab le funct ions fo r p a r t i c u l a r s i t u a t i o n s . A formal framework is ou t l ined in which general proper t ies of evaluat ion functions can be s tud ied. An app l i ca t ion of these concepts is made to the study of when decis ion ru le...

Til ts pape r s u r v e y s severa l a p p r o a c h e s to s eman t t c -ne tw ,~ rk s e m a n t ics t ha t h a v e not p r e v i o u s l y been t rea ted ~n the AI or c o m p u t a t t o n a l l i ngu t s t t c s h t e r a t u r e , t h o u g h there ~s a large ptulu. ~)ph~cal h t e r a t u r e i n v e s t ) g a t i n g t hem m ~ m l e d e t a d . In p a r t t c u l a r , p r o F ~ n ~ o n a ...