نتایج جستجو برای: cell ultrastructure

تعداد نتایج: 1690333  

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2014
Junren Chen Danli Peng Mohammad Shafi Song Li Jiasen Wu Zhengqian Ye Wenbo Yan Kouping Lu Dan Liu

A hydroponic culture experiment was conducted to study the effect of copper toxicity on root morphology, ultrastructure, and copper accumulation in Moso bamboo (Phyllostachys pubescens). Root ultrastructure of Moso bamboo was studied by transmission electron microscopy and scanning electron microscopy. Application of 200 μM Cu resulted in an accumulation of 810 mg kg(-1) dry weight and 91 mg kg...

Journal: :Nature Communications 2021

Abstract Correlative imaging and quantification of intracellular nanoparticles with the underlying ultrastructure is crucial for understanding cell-nanoparticle interactions in biological research. However, correlative nanoscale whole cells still remains a daunting challenge. Here, we report straightforward nanoscopic approach whole-cell imaging, by simultaneous ionoluminescence mapping impleme...

2015
Shengli Ma Yingnan Zhao Xue Xia Xue Dong Wenyu Ge Hui Li

Candida albicans (C.a) and Candida tropicalis (C.t) were treated with Streptococcus sanguinis bacteriocin (S.s bacteriocin), respectively; the bacteriostatic dynamics of S.s bacteriocin, their effects on cell surface hydrophobicity, leakage of inorganic phosphorus and macromolecular substance, cytosolic calcium concentration, and ultrastructure changes of Candida thallus were detected and analy...

Journal: :Plant physiology 2000
G W Turner J Gershenzon R B Croteau

Cryofixation and conventional chemical fixation methods were employed to examine the ultrastructure of developing peltate glandular trichomes of peppermint (Mentha x piperita). Our results are discussed in relation to monoterpene production and the mechanism of essential oil secretion. Peltate glands arise as epidermal protuberances (initials) that divide asymmetrically to produce a vacuolate b...

Omid Karimi, Saeed Hesaraki, Seyyed Pejman Mortazavi,

Background: The aim of this study was to use Japanese quail as an animal model to evaluate the effects of cadmium (Cd) on the ultrastructure and the activity of metallothionein (MT) in the liver and kidneys. Methods: One hundred male Japanese quails were randomly divided into two Cd and control groups in 2015. The first group received 100 ppm Cd for 60 days in their feed. The ultrastructural c...

Journal: :The Journal of Cell Biology 1962
Åke Flock Jan Wersäll

This paper is a preliminary report on some of the results of electron microscopic studies on the lateral line canal organ of the teleost fish Lota vulgaris. It deals with the ultrastructure of the synaptic area on the hair cells of the sensory epithelium and describes the nerve endings as well as a complicated system of foldings of the hair cell plasma membranes enclosing portions of the hair c...

Journal: :Microscopy 2013
Marie Kopecká

Polysaccharides account for more than 90% of the content of fungal cell walls, but the mechanism underlying the formation of the architecture of the cell walls, which consist of microfibrils embedded in an amorphous wall matrix, remains unknown. We used electron microscopy to investigate ten different fungal cell-wall polysaccharides to determine whether they could self-assemble into the fibril...

Background and Objective: Evaluation of degenerative changes of motoneurons and their related synapses can be useful in understanding the mechanisms of neurodegenerative diseases and their potential treatment. The present electron microscopic and immunohistochemical study investigates the axotomy-induced...

Journal: :Archives of ophthalmology 1987
D B Birnbaum D S Hull K Green N P Frey

We investigated the current reformulation of the commercially available intraocular preparation of carbachol for its effect on corneal thickness and endothelial cell ultrastructure. A 15-minute perfusion in the specular microscope with 0.01% carbachol caused a significant increase in the corneal swelling rate, which returned to control values after 75 minutes of reperfusion with Krebs Ringer bi...

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