Dose-response Relationship for Chromosome Aberations induced in Human Lymphocytes by 18 MeV Electron Beam Irradiation

1990 ◽  
Vol 26 (1) ◽  
pp. 40-43 ◽  
Author(s):  
E. A. H. Lashin ◽  
H. F. Moustafa ◽  
E. M. Elaasar ◽  
Y. Y. Bakir ◽  
S. D. Al Zenki
Keyword(s):  
Electron Beam ◽  
Dose Response ◽  
Electron Beam Irradiation ◽  
Human Lymphocytes ◽  
Response Relationship ◽  
Beam Irradiation ◽  
Dose Response Relationship

Dose-response relationship of γ-H2AX foci induction in human lymphocytes after X-rays exposure

2011 ◽  
Vol 46 (9) ◽  
pp. 997-999 ◽  
Author(s):  
Tania Mandina ◽  
Sandrine H. Roch-Lefèvre ◽  
Pascale Voisin ◽  
Jorge E. González ◽  
Ana I. Lamadrid ◽  
...  
Keyword(s):  
Dose Response ◽  
Human Lymphocytes ◽  
X Rays ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Relationship Of

Dose-response relationship for chromosome aberrations induced by fecapentaene-12 in human lymphocytes

1987 ◽  
Vol 191 (1) ◽  
pp. 5-7 ◽  
Author(s):  
Ernst Schmid ◽  
Manfred Bauchinger ◽  
Herbert Braselmann ◽  
Hans Rudolf Pfaendler ◽  
Waltraud Göggelmann
Keyword(s):  
Dose Response ◽  
Chromosome Aberrations ◽  
Human Lymphocytes ◽  
Response Relationship ◽  
Dose Response Relationship

Methods to Monitor and Improve the Performance of Specimen Holders for Transmission Electron Cryomicroscopy

1996 ◽  
Vol 54 ◽  
pp. 454-455
Author(s):  
B. L. Armbruster ◽  
B. Kraus ◽  
M. Pan
Keyword(s):  
Electron Microscopy ◽  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Quality Of Data ◽  
Electron Cryomicroscopy ◽  
Thermal Equilibration ◽  
Transmission Electron ◽  
Electron Microscopes

One goal in electron microscopy of biological specimens is to improve the quality of data to equal the resolution capabilities of modem transmission electron microscopes. Radiation damage and beam- induced movement caused by charging of the sample, low image contrast at high resolution, and sensitivity to external vibration and drift in side entry specimen holders limit the effective resolution one can achieve. Several methods have been developed to address these limitations: cryomethods are widely employed to preserve and stabilize specimens against some of the adverse effects of the vacuum and electron beam irradiation, spot-scan imaging reduces charging and associated beam-induced movement, and energy-filtered imaging removes the “fog” caused by inelastic scattering of electrons which is particularly pronounced in thick specimens.Although most cryoholders can easily achieve a 3.4Å resolution specification, information perpendicular to the goniometer axis may be degraded due to vibration. Absolute drift after mechanical and thermal equilibration as well as drift after movement of a holder may cause loss of resolution in any direction.

A SUBCUTANEOUS INJECTION ASSAY FOR ANTI-ANDROGENS IN THE CHICK

1962 ◽  
Vol 41 (2) ◽  
pp. 268-273 ◽  
Author(s):  
Ralph I. Dorfman
Keyword(s):  
Dose Response ◽  
Subcutaneous Injection ◽  
Response Relationship ◽  
Dose Response Relationship

ABSTRACT The stimulating action of testosterone on the chick's comb can be inhibited by the subcutaneous injection of 0.1 mg of norethisterone or Ro 2-7239 (2-acetyl-7-oxo-1,2,3,4,4a,4b,5,6,7,9,10,10a-dodecahydrophenanthrene), 0.5 mg of cortisol or progesterone, and by 4.5 mg of Mer-25 (1-(p-2-diethylaminoethoxyphenyl)-1-phenyl-2-p-methoxyphenyl ethanol). No dose response relationship could be established. Norethisterone was the most active anti-androgen by this test.

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