Root segments of Convolvulus arvensis, the field bindweed, were examined with the electron microscope to make possible a description of the fine structural correlates of lateral root protrusion through cortical parenchyma. Particular attention was directed to the outermost primordium cells, derived by meristematic activity from the endodermis, and to the contiguous cortical parenchyma cells. By...

In minor veins of leaves of Beta vulgaris L. (sugar beet) yellows virus particles were found both in parenchyma cells and in mature sieve elements. In parenchyma cells the particles were usually confined to the cytoplasm, that is, they were absent from the vacuoles. In the sieve elements, which at maturity have no vacuoles, the particles were scattered throughout the cell. In dense aggregations...

OBJECTIVE To assess the histological changes of the aorta, the renal arteries and the renal parenchyma in swine, induced by a metalic uncovered stent implanted in transrenal position in the abdominal aorta. METHODS Ten pigs with a mean weight of 86.6 kg and mean age of 6 months underwent implantation of metal stent graft placed in the aorta at the level of the renal arteries after 100 days of...

AIMS Compare the effects of montelukast or dexamethasone in distal lung parenchyma and airway walls of guinea pigs (GP) with chronic allergic inflammation. METHODS GP have inhaled ovalbumin (OVA group-2x/week/4weeks). After the 4th inhalation, GP were treated with montelukast or dexamethasone. After 72 hours of the 7th inhalation, GP were anesthetised, and lungs were removed and submitted to ...

PURPOSE To assess spatiotemporal patterns of local perfusion in MR brain perfusion images for patients with unilateral carotid stenosis. MATERIALS AND METHODS MR perfusion images acquired from 12 patients with unilateral carotid stenosis were retrospectively segmented using independent component analysis. Regions of interest selected from the segmentation results were used to measure the time...

PURPOSE To evaluate temporal changes in contrast enhancement patterns of non-tumorous hepatic parenchyma with a focus on arterial hypervascularity on multiphase computed tomography (CT) in patients with hepatocellular carcinoma (HCC) treated with stereotactic body radiotherapy (SBRT). METHODS We retrospectively identified 61 patients who had undergone multiphase contrast-enhanced CT at one, t...

BACKGROUND This study was proposed to evaluate a new method for autograft transplantation of liver tissue fragments (LTF) in the lung parenchyma and bronchus of dogs and to compare the results to find out if they are suitable sites for hepatocyte implantation or not. MATERIALS AND METHODS THE DOGS WERE RANDOMLY ASSIGNED INTO TWO CATEGORIES: LTF auto-transplantation to the lung parenchyma and ...

PURPOSE The purpose of this study was to investigate the recent results of pneumonectomy (Pn) for primary lung cancer. PATIENTS AND METHODS Thirty-four patients undergoing Pn and 26 patients undergoing broncho-or angioplastic lobectomy (namely, parenchyma-sparing lung resection) from January 1993 to December 2004 were reviewed. The oncological outcome of Pn was analyzed by disease-free surviv...