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LIFE01200604005 Shri Somnath Ghosh - Homi Bhabha National ...

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CHAPTER 3<br />

RESULTS<br />

Fig.3.3.2.4 Phosphorylation of ATR at 4h after exposure to 2Gy and 6Gy gamma or 2Gy oxygen<br />

irradiation in A549 cells. (A) Representative image showing p-ATR foci 4 hours after<br />

irradiation. Each phospho-ATR antibody was indirectly labeled with Molecular Probe 488<br />

secondary antibody (green) and cells were mounted with ProLong Gold antifede with DAPI<br />

(blue). All images were captured using Carl Zeiss confocal microscope with the same exposure<br />

time. (B) Graph represents average numbers of foci per cell, percentage of cells showing the foci<br />

is marked above the bars. (C) Graph represents relative intensity of p-ATR as determined by<br />

ImageJ software. At least 100 cells per experiment were analyzed from three independent<br />

experiments. Data represents means ± SD of three independent experiments; significantly<br />

different from unirradiated controls: *P < 0.05, **P < 0.01. Significantly different from 6Gy<br />

gamma: ## P < 0.01.<br />

164

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