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. 2013 Aug 24;15(3):224–229.

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Fig 2 — Growth curve of U87MG cell line in the spheroid cultures (y=6999e0.561X). The log phase of curve is in days 2 to 5 and gradient of this phase is used to measure the volume doubling time (calculated doubling time is 67 hours). (Error bars represent Mean ± SEM of 3 replicates).