نتایج جستجو برای: cell aberration

تعداد نتایج: 1689514  

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2003
Sergio Barbero Susana Marcos Ignacio Jiménez-Alfaro

Corneal and ocular aberrations were measured in a group of eyes before and after cataract surgery with spherical intraocular lens (IOL) implantation by use of well-tested techniques developed in our laboratory. By subtraction of corneal from total aberration maps, we also estimated the optical quality of the intraocular lens in vivo. We found that aberrations in pseudophakic eyes are not signif...

Journal: :Acta medica Okayama 2001
H Lalić A Lekić B Radosević-Stasić

The genotoxic effects of occupational exposure to ionizing and non-ionizing radiation were investigated in 25 physicians and nurses working in hospitals and in 20 individuals working at radio-relay stations. Examination was conducted by chromosome aberration analysis of peripheral blood lymphocytes. The data showed that total number of chromosome aberrations in people exposed to ionizing and ra...

Journal: :Applied optics 2004
James A Lock

The efficiency of trapping an on-axis spherical particle by use of laser tweezers for a particle size from the Rayleigh limit to the ray optics limit is calculated from generalized Lorenz-Mie light-scattering theory and the localized version of a Gaussian beam that has been truncated and focused by a high-numerical-aperture lens and that possesses spherical aberration as a result of its transmi...

Journal: :Mutation research 2006
Natalia D Sumption Dudley T Goodhead Rhona M Anderson

The thymidine analogue, 5'-bromodeoxyuridine (BrdU), is a known mutagen that is routinely introduced into culture media for subsequent Harlequin stain analysis and determination of cell cycle status. Previously, we examined the induction of chromosome aberrations in human peripheral blood lymphocytes (PBL) known to be in their 1st cell division following exposure to a low dose (0.5 Gy, average ...

Amin Soleymanian Fahimeh Ramezani Tehrani, Fatemeh Rezayat Mehri Hajiaghayi Mehrnaz Mesdaghi Nazanin Ghasemi

Background: Polycystic Ovarian Syndrome (PCOS) is a pro-inflammatory condition that supports the development of metabolic aberration and ovarian dysfunction. Chronic inflammation and the increased levels of androgens in this group of patients and their impact on the immune system may increase the risk of developing malignancies, including ovarian cancer. Thus, we interacted ovarian tumor cells ...

Da-Yan Zhang Hua-Zhong Liu, Jiang-Hua Shang, Ping Luo, Wei Xiao, Xiao-Mei Yang Yi-Peng Gu Zhen-Hua Duan

Objective(s): The aim of this study was to explore the effects of Squid ink polysaccharide (SIP) on prevention of autophagy and oxidative stress induced by cyclophosphamide (CP) in Leydig cells of mice. Materials and Methods: Examination of reproductive organ exponents, abnormal sperm rate, activities of superoxide dismutase (SOD), catalase (CAT), contents of malondialdehyde (MDA), and histolog...

2013
Amanda C Kingston Ian G Cox

PURPOSE The aim of this analysis was to determine the total ocular wavefront aberration values of a large phakic population of physiologically normal, ametropic eyes, gathered under the same clinical protocol using the same diagnostic wavefront sensor. MATERIALS AND METHODS Studies were conducted at multiple sites in Asia, North America, Europe, and Australia. A Bausch + Lomb Zywave II Wavefr...

Journal: :Molecular cancer research : MCR 2006
Ceshi Chen Arun K Seth Andrew E Aplin

Recent studies revealed that E3 ubiquitin ligases play important roles in breast carcinogenesis. Clinical research studies have found that (epi)-genetic (deletion, amplification, mutation, and promoter methylation) and expression aberration of E3s are frequent in human breast cancer. Furthermore, many studies have suggested that many E3s are either oncogenes or tumor suppressor genes in breast ...

Journal: :Cancer research 1967
D B Stoltz H F Stich D S Yohn

The incidence of cells with karyotypic abnormalities, such as pseudodiploidy and aneuploidy, and of cells with chromosome aberrations, including breaks, fragmentations, and coiling anomalies, was estimated in regenerating, transplanted, and cultured neoplasms induced in Syrian hamsters by human Adenovirus type 12. The various neoplasms studied consisted of karyotypically heterogeneous cell popu...

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