Until recently, bats of the genus Kerivoula in Southeast Asia were relatively poorly known, with most species recorded from relatively few specimens (Corbet and Hill, 1992). However, recent use of harp traps (Francis, 1989) has shown that many species of Kerivoula are, in fact, relatively common in the forest understorey in Southeast Asia (Francis, 1990; Francis et al., 1999; Kingston et al., 1...

Inputs of detritus from the surface ocean are an important driver of community dynamics in the deep sea. The assessment of the flow of carbon through the benthic food web gives insight into how the community is sustained, and its resilience to fluctuations in food supply. We used a linear inverse model to compare the carbon flow through the food webs on an abyssal hill and the nearby plain at t...

SINcE it is now generally agreed that "haematin" iron in foods is largely unavailable for haemoglobin formation, and therefore is probably not absorbed [Elvehjem et al., 1933; Lintzel, 1931], it is clear that a knowledge of the total iron in a foodstuff may be of little use from a dietetic standpoint. A knowledge of the ionisable iron is probably of much more value, although it cannot be assume...

Atmospheric levels of methane, a potent greenhouse gas, vary greatly in the climate record and are usually thought to be due to emissions from continental wetlands. However, Tessa Hill et al. report that methane was released into the atmosphere from the oceans during the period of global warming associated with the most recent deglaciation. The results suggest that, at times, much more methane ...

In a 2007 empirical report, Hamlin, Wynn, and Bloom provided the first evidence that preverbal infants at 6 and at 10 months of age evaluate others on the basis of their helpful and unhelpful actions toward unknown third parties. In their "hill paradigm," a Climber puppet tried but failed to climb a steep hill, and was alternately bumped up the hill by the Helper and bumped down the hill by the...

The immune response of jawed vertebrates is an inducible, highly specific defense mechanism that is characterized by an enormous diversity in recognition capacity. This allows responses to potential pathogens that have never been previously encountered in the evolution of the species. The molecules that carry out the specific recognition of antigen are glycoproteins termed immunoglobulins (Igs)...

Dr. Márlio Oliveira is a graduate student, Master of Science in Dentistry Program, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, and in the private practice of orthodontics at Rua Mato Grosso, 450 Universal, Betim, Minas Gerais, Brazil; e-mail: marlio_ [email protected]. Dr. Pithon is a Professor of Orthodontics, Southwest Bahia State University, Jequié,...

BACKGROUND AND AIMS In the last decade, genomic studies using DNA markers have strongly influenced the current phylogeny of angiosperms. Genome size and ploidy level have contributed to this discussion, being considered important characters in biosystematics, ecology and population biology. Despite the recent increase in studies related to genome size evolution and polyploidy incidence, only a ...

Comment on: Helchowski CM, et al. Cell Cycle 2013; 12:3749-58; PMID:24107634; http://dx.doi.org/10.4161/cc.26640 Christopher J Bakkenist and Cyrus Vaziri; Departments of Radiation Oncology and Pharmacology and Chemical Biology; University of Pittsburgh School of Medicine; Hillman Cancer Center; Pittsburgh, PA USA; Department of Pathology; University of North Carolina Chapel Hill; Chapel Hill, N...

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