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The size of DNA replication intermediates from Drosophila cells pulse-labeled with 3H-thymidine for 30-120 sec was determined by electrophoresis in formamide-polyacrylamide gels. Replication intermediates were formed in three discrete size classes, with median lengths of 61, 125 and 240 nucleotides. Replication intermediates in the 125 nucleotide size class(More)
There has been considerable recent interest in understanding the role of positive inter-specific interactions within ecology, and significant progress has been made both empirically and theoretically. Similarly, considerable progress has been made in improving our understanding of the mechanisms that limit species' ranges. In this contribution, we seek to(More)
Puerto Rico, and U.S. social workers practicing abroad. The mission of NASW is to enhance the professional growth and development of its members, to create and maintain professional standards, and to advance sound social policies. The mission of ASWB is to assist social work regulatory bodies in carrying out their legislated mandates and to encourage(More)
The Association also thanks the members of the NASW Workforce Study Expert Panel for their thoughtful assistance in designing the survey instrument and reviewing the analysis. The funding support of the Robert Wood Johnson Foundation is also gratefully acknowledged. Findings and conclusions presented in this report are those of the authors alone and do not(More)
" The major challenge of social work is that social workers have too many things on their plates. They cannot possibly do everything they need to do and do it well. Burnout is a main reason people are leaving the profession. We are short-handed as it is… " —Survey Participant The 2004 benchmark national study of licensed social workers provided a wealth of(More)
Introduction Current and emerging advances in the science of genetics provide significant promise for enhanced health and well-being and an opportunity for social workers to make a major contribution. As rapid discoveries in genetics (the study of single genes and their effects) and genomics (the study of the functions and interaction of all the genes in(More)
Rabbit alveolar macrophages were cultured in an environment conducive to the secretion of both reactive oxygen and proteinases, so that the relative importance of proteolytic and oxidative inactivation of alpha 1-proteinase inhibitor by alveolar macrophages could be evaluated. The inactivation of alpha 1-proteinase inhibitor was proportional to its(More)