Background and study aims  A major challenge in eosinophilic esophagitis (EoE) is disease recognition during endoscopy as there are no pathognomonic findings. We aimed to determine the utility of high-definition (HD) iSCAN virtual chromoendoscopy (VC) in diagnosis of EoE. Patients and methods  One hundred eighty-nine consecutive patients presenting with dysphagia or food bolus impaction were as...

Water flow and pesticide transport in the soil of fields with ridges and furrows may be more complex than in the soil of more level fields. Prior to crop emergence, the tracer bromide ion and the insecticide carbofuran were sprayed on the humic-sandy soil of a potato field with ridges and furrows. Rainfall was supplemented by sprinkler irrigation. The distribution of the substances in the soil ...

In the syncytial blastoderm stage of Drosophila embryogenesis, dome-shaped actin "caps" are observed above the interphase nuclei. During mitosis, this actin rearranges to participate in the formation of pseudocleavage furrows, transient membranous invaginations between dividing nuclei. Embryos laid by homozygous sponge mothers lack these characteristic actin structures, but retain other actin a...

Cryo-electron microscopy reveals the structure of a chloride channel that is closely related to a protein that transports lipids.

Cytokinesis presents us with two mysteries: how a cleavage furrow is localized to a single, defined place in the cell; and how an accumulation of proteins can deform a perfectly stable ovoid shape to create two new cells (Fig. 1). Scientists working in varied organisms met recently in Burlington, VT, to address these questions. Each question has a simple answer, although those answers turn out ...

*Thomas J. Trout, USDA-Agricultural Research Service, Water Management Research Laboratory, 9611 S. Riverbend Ave. Parlier, CA 93658. *Corresponding author: [email protected] ABSTRACT Sediment data were collected in southern Idaho irrigation furrows. Irrigation furrows allow detailed study of sediment transport relationships because of gradually decreasing flow rates in long, uniform, ...