Rapid semiquantitative method for screening large numbers of virus samples by negative staining electron microscopy.
نویسندگان
چکیده
A rapid, semiquantitative method for screening large numbers of virus samples by negative staining electron microscopy is presented. Results obtained by this method are compared with results obtained by the pseudoreplica method and a measureddrop method. A figure is presented which represents the limit of detectability for virus by negative staining.
منابع مشابه
Virus morphology as an aid for rapid diagnosis.
Standard methods of virus diagnosis may take many days to complete. As antiviral drugs are being used with more effectiveness, it becomes more important to develop rapid diagnostic methods. It takes only a few minutes to prepare and examine a specimen for electron microscopy (EM), using the negative staining technique. Viruses in the specimen can readily be identified by their morphology. In or...
متن کاملComparing Invasive and Non-Invasive of Isolated Shigella flexneri by Electron Microscopy of Cell Culture, SDS-PAGE and Congo Red Method
The aim of this study was to compare invasive and non-invasive strains of Shigella flexneri isolated from Tehran by a 120 kDa protein band by SDS-PAGE, electron microscopy of cell culture and Congo red dye methods. Methods: S. flexneri strains were isolated by standard bacterial methods from fecal specimens of children attending to the 3 children’s hospitals. Phenotype analysis for screening v...
متن کاملUrine Cytology: Useful Screening Method for Polyoma Virus Nephropathy in Renal Transplant Patients
Polyoma virus nephropathy occurs in 3% to 4% of renal transplant recipients, causing graft loss in 50% of cases. The objective of the present study was to explore the effects of age, sex, post-transplantation period and plasma creatinine levels on the polyoma virus infection in kidney transplanted patients. Urine samples were collected from 362 patients, centrifuged and microscopic slides prepa...
متن کاملVariations on Negative Stain Electron Microscopy Methods: Tools for Tackling Challenging Systems.
Negative stain electron microscopy (EM) allows relatively simple and quick observation of macromolecules and macromolecular complexes through the use of contrast enhancing stain reagent. Although limited in resolution to a maximum of ~18 - 20 Å, negative stain EM is useful for a variety of biological problems and also provides a rapid means of assessing samples for cryo-electron microscopy (cry...
متن کاملPractical aspects of diagnostic electron microscopy.
The electron microscope technique of negative staining was first used to obtain fundamental information about virus morphology, but in recent years it has developed into a practical method for virus diagnosis. The methods employed are both simple and rapid. The following review discusses in detail the steps that must be taken to obtain good electron microscope preparations and illustrates some ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Applied microbiology
دوره 20 6 شماره
صفحات -
تاریخ انتشار 1970