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Abstract
This disclosure includes microfluidic devices, systems, and methods for investigating three-dimensional (3D) cell structures (e.g., organoids, spheroids, scaffolds, hydrogels, and the like). Some examples of the present microfluidic devices comprise: a body having a first end, a second end, to lateral edges, an upper side, a lower side, a first layer region between a medial plane of the body and the lower side, and a second layer region between the medial plane and the upper side. In some such examples, the first layer region defines one or more rows of wells, with each well open at the medial plane and having a bottom between the medial plane and the lower side. In some such examples, the second layer region can defines one or more elongated channels open at the medial plane and having a top between the medial plane and the upper side, with each of the elongated channels aligned with one of the rows of wells such that the respective elongated channel is in fluid communication with each of the wells in the respective row of wells.