FILE - This photo released Nov. 5, 2019, by the Atomic Energy Organization of Iran, shows centrifuge machines in the Natanz uranium enrichment facility in central Iran. (Atomic Energy Organization ...

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Homogenize by douncing 15 times, then centrifuge (3,500 × g, 10 min, 4°C). iii. Collect the supernatant (i.e., S-100 cytoplasmic extract) and estimate the packed nuclear volume of the pellet using the ...