Older age becomes common late in human evolution

Older age becomes common late in human evolution.

Increased longevity, expressed as number of individuals surviving to older adulthood, represents one of the ways the human life history pattern differs from other primates. We believe it is a critical demographic factor in the development of human culture. Here, we examine when changes in longevity occurred by assessing the ratio of older to younger adults in four hominid dental samples from su...

Dementia in Iran: how soon it becomes late!

Gene expression becomes heterogeneous with age

Evidence from a number of fields indicates that phenotypic variation among individuals and among somatic cells increases with age [1–5]. However, no evidence for an age-dependent increase in variation in gene expression has yet been found [6–9]. Using eight microarray data sets from different studies in humans and rats, we find that gene expression becomes more variable with advancing age. This...

The Anger scintillation camera becomes of age.

s of original papers are invited for presentation at the annual meeting of the Missouri Valley Chapter of the Society of Nuclear Medicine. Papers are to be 10 minutes. Please submit 200 word abstract before August 1, 1979 to: David F. Preston, M.D., Division of Nuclear Medicine, Department of Radiology, Kansas University Medical Center, 39th and Rainbow Blvd., Kansas City, Kansas 66103. For mor...

evolution of shape in late islamic seals

shape is regarded as one of outward characteristics of islamic seals. this characteristic, which is part of common traits of all different areas of seal studies, could be defined as framework of circumference of seals impression on written materials and documents, which in fact results from the shape of seals surfaces. shape has been considered as one of the ways of recognizing the administrati...