Orna Zimhoni (1951–1996)

Orna Cohen-Fix: Playing with nuclear morphology

T he eukaryotic nucleus is immediately identifi able even to a new student of cell biology. It's so familiar that many scientists can look right at it and completely lose sight of a rather fundamental question: why is the nucleus round? This may sound like a funny question, says Orna Cohen-Fix, but it's one she takes quite seriously, because the answer to this question could lend important insi...

Weak Alternating Automata Are Not That Weak 1 ORNA

Abstract Interpretation of Reactive Systems: Preservation of CTL

Interpretation of Reactive Systems: Preservation of CTL Dennis Dams Orna Grumberg Rob Gerth

The Plasminogen Activation System in Human Colon Cancer: Messenger RNA for the Inhibitor PAI-1 Is Located in Endothelial Cells in the Tumor Sir orna'

Fourteen human colon adenocarcinomas were examined by in situ hybridization for the presence of mRNA for plasminogen activator inhib itor type 1 (PAI-1). All specimens contained PAI-1 mRNA in endothelial cells of some vessels in the stroma immediately surrounding the invasive tumor glands, in granulation tissue, and in some capillaries located under the free luminal surface of carcinomatous epi...

Economic Brief - The Political Economy of Food Security in North Africa

This report was produced by Jane Harrigan (Consultant, AfDB and Professor of Economics, Department of Economics, School of Oriental and African Studies, University of London) under the supervision of Vincent Castel (Principal Program Officer, ORNA). Overall guidance was received from Jacob Kolster (Director, ORNA) and Nono Matondo-Fundani (Director, ORNB). The team also included Catherine Baumo...