Fig 3. Fluorescence confocal micrographs of live and dead cell-stained control cell carrier devices. Images are argon-laser fluorescence confocal micrographs (original magnification x 20) of control cell carrier devices recovered after microcatheter transit (A) and those not passed through microcatheters (B) obtained after staining for live (green fluorescence) and dead cells (red fluorescence) (printed with permission from the Mayfield Clinic).