New evidence shows that older adults need more dietary protein than do younger adults to
support good health, promote recovery from illness, and maintain functionality. Older people …

Background Vegetables and fruit provide a significant part of human nutrition, as they are
important sources of nutrients, dietary fibre, and phytochemicals. However, it is uncertain …

The human pineal gland is a neuroendocrine transducer that forms an integral part of the
brain. Through the nocturnally elevated synthesis and release of the neurohormone melatonin, …

The structural basis for the divalent cation–dependent binding of heterodimeric αβ integrins
to their ligands, which contain the prototypical Arg-Gly-Asp sequence, is unknown. …

Integrins are αβ heterodimeric receptors that mediate divalent cation-dependent cell-cell and
cell-matrix adhesion through tightly regulated interactions with ligands. We have solved the …

Background:Elevated circulating concentrations of proinflammatory cytokines may contribute
to the pathogenesis of congestive heart failure (CHF). In vitro studies suggest that vitamin D …

" Like love, Greek poetry was not for hereafter," writes Eva Stehle," but shared in the present
mirth and laughter of festival, ceremony, and party." Describing how men and women, young …

FLOATING-POINT ARITHMETIC is by far the most widely used way of approximating real-number
arithmetic for performing numerical calculations on modern computers. A rough …

The availability of new data sources on human mobility is opening new avenues for
investigating the interplay of social networks, human mobility and dynamical processes such as …

Background Little quantitative information is available on the mixing patterns of children in
school environments. Describing and understanding contacts between children at school …