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The injection of exogenous renal progenitor cells (RPCs) into the nephrogenic zone
(A) The embryo in a prone position is held with micro-tweezers. A glass needle is inserted under the renal capsule. Green fluorescent protein (GFP)-RPCs are injected.
(B) Metanephroses (MNs) after three injections of GFP-RPCs into each MN. Scale bar, 1 mm.
