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PAI-guided simulation of injectable microplastics. (A) PAI of blood vessels in a chicken embryo. (B) PAI of a syringe close to a blood vessel. (C) PAI of a syringe needle passing indirectly under a blood vessel. (D) PAI of the syringe needle away from the underside of the vessel. (E–H) Corresponding 3D image to (A–D).
