Assertion: spheroid | /r/CapableOf | sit on the bottom of the plate
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Source sentences:
text: Common pitfalls we would encounter would be the cells failing to come together to form a spheroid, the cell-cell contacts not being tight enough so that when we moved the spheroid to collagen it would fall apart, Trying to ensure that the spheroid is embedded in the 3D matrix and not floating on top or sitting on the bottom of the plate, etc.