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NatureServe is a non-profit organization dedicated to providing the scientific knowledge that forms the basis for effective conservation action. Acknowledgements We wish to acknowledge the generous support provided by The Nature Conservancy for this effort to classify and characterize the ecological systems of the United States. We are particularly grateful(More)
Expanding human population and economic growth have led to large-scale conversion of natural habitat to human-dominated landscapes with consequent large-scale declines in biodiversity. Conserving biodiversity, while at the same time meeting expanding human needs, is an issue of utmost importance. In this paper we develop a spatially explicit landscape-level(More)
Theresa Calvelli, Thomas N. Denny, Helene Paxton, Rebecca Gelman, and Jonathan Kagan1 Department of Pediatrics, Albert Einstein College of Medicine, Bronx, New York (T.C.); Department of Pediatrics, New Jersey Medical School/Children’s Hospital of New Jersey, Newark, New Jersey (T.N.D.); Department of Flow Cytometry, Maryland Medical Laboratory, Baltimore,(More)
Since the publication of the ‘‘NIAID DAIDS Guideline for Flow Cytometric Immunophenotyping’’ (1) in 1993, significant scientific and technological advances in the development and production of reagents, instrumentation, and software have permitted widespread access to multicolor flow cytometry in both research and clinical laboratories. As is often the case(More)
This study of the effect on CD4%, CD8%, CD3+8+%, and CD3% of flow cytometer, monoclonal antibody, and fluorochrome was based on 71 whole-blood samples, each evaluated by 42 to 59 laboratories during 2 years of a flow cytometry quality assessment program. For the 24 HIV-positive specimens, FACScans produced significantly lower CD4% values than EPICS-Cs or(More)
Conceptions of psychological development devised by Western theorists have assumed connectivity of stages, stability of acquired structures, and continuity of process, and have resisted the possibility that some emerging psychological qualities might have relatively short histories. Empirical studies of the first two years of life suggest that the(More)
  • Jimmy Kagan
  • Journal of child psychology and psychiatry, and…
  • 1982
Longitudinal and cross-sectioned investigations of children from three different cultural settings reveal the emergence of behaviors during the last half of the second year that imply the first appreciation of standards on prohibited actions, recognition of the ability to gain goals, and awareness of the self's feeling states. It was suggested that these(More)
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