scholarly journals A Simple Method for Freeze-Cleaving of Cells Grown on Plastic Culture Dish

1977 ◽  
Vol 2 (4) ◽  
pp. 361-365 ◽  
Author(s):  
Hajime Fujisawa ◽  
Hiroyuki Morioka
Keyword(s):  
Culture Dish ◽  
Simple Method ◽  
Plastic Culture Dish

scholarly journals A simple and reliable method for the localization in cell culture of single identifiable cells for ultrastructural analyses.

1984 ◽  
Vol 32 (4) ◽  
pp. 444-446 ◽  
Author(s):  
K Morrison-Graham ◽  
P H O'Lague
Keyword(s):  
Electron Microscopy ◽  
Cell Culture ◽  
Reliable Method ◽  
Single Cells ◽  
Ultrastructural Analysis ◽  
Culture Dish ◽  
Simple Method ◽  
Monolayer Cultures ◽  
A Cell ◽  
Individual Grid

A simple method for relocating single cells in monolayer cultures for subsequent morphological or ultrastructural analysis is reported. This consists of producing, on the culture dish surface, a nontoxic carbon grid that is preserved during processing for either transmission (TEM) or scanning (SEM) electron microscopy. For TEM studies these grids are readily transferred along with the cells into the embedding plastic, and thus individual grid squares containing a cell(s) of interest can be quickly located, remounted, and sectioned. These grids may be useful for ultrastructural analyses of single cells previously studied electrophysiologically or after microinjection of macromolecules.

Simple, inexpensive suction electrode system for the student physiology laboratory.

1993 ◽  
Vol 265 (6) ◽  
pp. S35 ◽  
Author(s):  
D M Easton
Keyword(s):  
Sciatic Nerve ◽  
Electrode System ◽  
Culture Dish ◽  
Rubber Tubing ◽  
Suction Electrode ◽  
Plastic Syringe ◽  
Physiology Laboratory ◽  
Frog Sciatic Nerve ◽  
Disposable Plastic ◽  
Plastic Culture Dish

A versatile, inexpensive, easily constructed suction electrode system is described that can be used for routine exercises by the student on, or for demonstrations of, the electrophysiology of frog sciatic nerve and gastrocnemius and sartorius muscles. A disposable plastic syringe and a disposable pipette with Ag-AgCl wire comprise the suction electrode. Six readily manipulable electrodes are installed in the walls of the Plexiglas preparation bath, and an arbitrary number of additional "free" electrodes can be placed where desired. An optional small chamber, formed from a disposable plastic culture dish and Gootch rubber tubing, provides for "barrier" recording within the larger chamber. Interpretations are given of the electrical responses of nerve and muscle in terms of longitudinal currents along the preparation within the suction electrode tubes.

A simple way for producing holographic filters suitable for image improvement

1978 ◽  
Vol 36 (1) ◽  
pp. 226-227
Author(s):  
K.-H. Herrmann ◽  
E. Reuber ◽  
P. Schiske
Keyword(s):  
Transfer Functions ◽  
Diffraction Order ◽  
Lateral Position ◽  
Simple Method ◽  
Spatial Frequencies ◽  
Resolution Electron ◽  
Wiener Filters ◽  
Image Improvement ◽  
Optical Reconstruction ◽  
Set Up

Aposteriori deblurring of high resolution electron micrographs of weak phase objects can be performed by holographic filters [1,2] which are arranged in the Fourier domain of a light-optical reconstruction set-up. According to the diffraction efficiency and the lateral position of the grating structure, the filters permit adjustment of the amplitudes and phases of the spatial frequencies in the image which is obtained in the first diffraction order.In the case of bright field imaging with axial illumination, the Contrast Transfer Functions (CTF) are oscillating, but real. For different imageforming conditions and several signal-to-noise ratios an extensive set of Wiener-filters should be available. A simple method of producing such filters by only photographic and mechanical means will be described here.A transparent master grating with 6.25 lines/mm and 160 mm diameter was produced by a high precision computer plotter. It is photographed through a rotating mask, plotted by a standard plotter.

Rotary Beveling for In Situ Thin-Section Microscopy of Cell Cultures

1981 ◽  
Vol 39 ◽  
pp. 550-551
Author(s):  
Dean A. Handley ◽  
Jack T. Alexander ◽  
Shu Chien
Keyword(s):  
Cell Growth ◽  
Cell Cultures ◽  
Molecular Interactions ◽  
Convenient Method ◽  
Petri Dish ◽  
Simple Method ◽  
Thin Section Microscopy ◽  
Thin Sectioning ◽  
Organic Fluids

In situ preparation of cell cultures for ultrastructural investigations is a convenient method by which fixation, dehydration and embedment are carried out in the culture petri dish. The in situ method offers the advantage of preserving the native orientation of cell-cell interactions, junctional regions and overlapping configurations. In order to section after embedment, the petri dish is usually separated from the polymerized resin by either differential cryo-contraction or solvation in organic fluids. The remaining resin block must be re-embedded before sectioning. Although removal of the petri dish may not disrupt the native cellular geometry, it does sacrifice what is now recognized as an important characteristic of cell growth: cell-substratum molecular interactions. To preserve the topographic cell-substratum relationship, we developed a simple method of tapered rotary beveling to reduce the petri dish thickness to a dimension suitable for direct thin sectioning.

Development of a simple method for the determination of single nucleotide polymorphisms

2010 ◽  
Vol 34 (8) ◽  
pp. S75-S75
Author(s):  
Weifeng Zhu ◽  
Zhuoqi Liu ◽  
Daya Luo ◽  
Xinyao Wu ◽  
Fusheng Wan
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Nucleotide Polymorphisms ◽  
Simple Method ◽  
Single Nucleotide
Sign in / Sign up

Export Citation Format

Share Document