Results 31 to 40 of about 101,852 (192)

VASCULAR BUNDLES AND WICKERWORKS IN CHILDHOOD BRAIN TUMORS

open access: yesJournal of Neuropathology and Experimental Neurology, 1989
We reviewed 114 childhood brain tumors and brain sections from 30 children with no nervous system lesions to determine the incidence of vascular bundles (VB) and vascular wickerworks (VW). VB consist of a group of small blood vessels running parallel to each other.
K, Sato, L B, Rorke
openaire   +2 more sources

Plasmodesmatal frequency in relation to short-distance transport and phloem loading in leaves of barley (Hordeum vulgare). Phloem is not loaded directly from the symplast [PDF]

open access: yes, 1997
We investigated the phloem loading pathway in barley, by determining plasmodesmatal frequencies at the electron microscope level for both intermediate and small blade bundles of mature barley leaves.
Botha, C E J, Cross, R H M
core   +2 more sources

Longitudinal arrangement of leaf traces and compound vascular bundles in the stem of Aristolochia clematitis L.

open access: yesActa Societatis Botanicorum Poloniae, 2014
The compound vascular bundles in the Aristolochia clematitis stems are entirely composed of leaf traces. At the stage of protoxylem differentiation there is not one vessel in the compound vascular bundle which would belong solely to the stem. In a mature
Zofia Puławska
doaj   +1 more source

Vascular Bundles Mediate Systemic Reactive Oxygen Signaling during Light Stress [PDF]

open access: yesThe Plant Cell, 2020
Abstract Systemic signaling and systemic acquired acclimation (SAA) are essential for plant survival during episodes of environmental stress. Recent studies highlighted a key role for reactive oxygen species (ROS) signaling in mediating systemic responses and SAA during light stress in Arabidopsis (Arabidopsis thaliana).
Sara I. Zandalinas   +2 more
openaire   +2 more sources

BRL1 and BRL3 are novel brassinosteroid receptors that function in vascular differentiation in Arabidopsis [PDF]

open access: yes, 2004
Plant steroid hormones, brassinosteroids (BRs), are perceived by the plasma membrane-localized leucine-rich-repeat-receptor kinase BRI1. Based on sequence similarity, we have identified three members of the BRI1 family, named BRL1, BRL2 and BRL3.
Caño Delgado, Ana   +8 more
core   +1 more source

FLORAL BUNDLE FUSION AND VASCULAR CONSERVATISM [PDF]

open access: yesTAXON, 1972
SummaryCritiques are presented of the three main precepts of vascular conservatism, viz.: (1) extent of fusion of bundles denotes degree of evolutionary advancement; (2) 'vestigial traces' indicate organs that have disappeared because vascular patterns lag behind in evolution; and (3) orientation of bundles demonstrates homologies. Precepts (2) and (3)
openaire   +2 more sources

Comparative studies on stem anatomical structure of rice plants with various ploidy level

open access: yes浙江大学学报. 农业与生命科学版, 2009
To investigate the effects of ploidy changes on the stem structure, by using flow cytometry (FCM), we distinguished six different ploidy materials (haploid, diploid, and triploid of line FC311 and haploid, diploid, and tetraploid of line FC322), in rice (
JIN Liang   +3 more
doaj   +1 more source

The effect of 2,4-D and kinetin on dedifferentiation of petiole cells in Arabidopsis thaliana

open access: yesBiologia Plantarum, 2012
Phytohormones are indispensable factors regulating plant cell dedifferentiation. In this paper, different concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D) and kinetin (KIN) were incorporated in the culture medium and the anatomy of ...
F. Li, X. Cui, Z. Feng, X. Du, J. Zhu
doaj   +1 more source

Biomarker-guided implementation of the KDIGO guidelines to reduce the occurrence of acute kidney injury in patients after cardiac surgery (PrevAKI-multicentre): protocol for a multicentre, observational study followed by randomised controlled feasibility trial [PDF]

open access: yes, 2020
Introduction Acute kidney injury (AKI) is a frequent complication after cardiac surgery with adverse short-term and long-term outcomes. Although prevention of AKI (PrevAKI) is strongly recommended, the optimal strategy is uncertain.
Arndt, Christian   +29 more
core   +2 more sources

Evidence update on prevention of surgical site infection [PDF]

open access: yes, 2015
Purpose of review: surgical site infection (SSI) is a common health care associated infection and complicates up to 10-20% of operations with considerable health care resources.
Astagneau   +42 more
core   +1 more source

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