Many cell types, including fi broblasts and epithelial cells, move forward by forming an actin-rich membrane protrusion, called a lamellipodium, at the front of the cell. In the early 1990s, researchers thought that lamellipodial protrusion was driven by the polymerization of linear actin fi laments. In two JCB papers published in 1997 and 1999, however, Tatyana Svitkina and colleagues revealed...

Central MessageDespite the challenging pathoanatomy, ascending aorta and aortic arch interventions are constantly developing opening doors for patients previously considered inoperable.“I'd rather die.”—Michael E. DeBakey, MD1Altman L.K. The man on table devised surgery. New York Times.https://www.nytimes.com/2006/12/25/health/25surgeon.htmlDate: December 25, 2006Google ScholarSee Article page ...

this research has been conducted to investigate the influence of steam temperature and densification percentage on withdrawal strength of nail and screw joints as well as flexural strength in compressed wood of eastern cottonwood (populus deltoeides). for this purpose 15 healthy standing trees of eastern cottonwood were selected from dr. bahramnia forest located in shasht-kola (gorgan). the fla...