Fig. 10.

a) The endomicroscope has been assembled into a provisional metal sleeve with a rigid length/diameter of 14.5 cm / 2.3 mm (1) and an additional movable part with a length/diameter of 47.5 cm / 5.0 mm (2) to improve the handling properties of the probe in the medical environment. Scale bar 3 cm. b) Cell flow in blood vessels can be imaged in real time in the mouth of a human by locally staining the area under observation with fluorescein (ALCON). c) By intraveneous injection of 1 ml 10-percent fluorescein into the volunteer’s arm we could detect the contours of single cells after a slight post-processing local contrast enhancement. Scale bars b) and c) 50 μm, respectively.