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(a) Microfluidics-based single-cell microinjection system. 1: Cell is moved toward fixed microneedle. 2: Cell impinges on the needle. 3: Cell is lifted off of the needle and carried away.37 (b) Ultra-high-throughput (UHT) mechanoporation concept. 1: Cells are captured on a microneedle array. 2: Cargo is inserted into cells. 3: Cells are released. (c) SEM of 100 × 100 UHT capture site array with ~200 nm tip diameter solid penetrators.26 (d) Miniaturized jet injector concept.38
