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. 2002 Mar 9;324(7337):588–591. doi: 10.1136/bmj.324.7337.588

Figure 1.

Figure 1

Needle type microdialysis probe with a semipermeable membrane at the tip. The probe can be inserted into tissue by means of a guide cannula. The probe's inflow tubing is connected to a microperfusion pump, and the probe is constantly perfused with a physiological solution at a rate of ∼1 μl/min. Samples are continuously collected from the outflow tubing