Fig. 2From: Pre-Microporation Improves Outcome of Pancreatic Islet Labelling for Optical and 19F MR ImagingComparison of viability, gain (a) and fluorescent and MRI signals (b) at various pulse numbers. Viability and gain were comparable at one and two pulses and significantly lower at four pulses (Mann-Whitney U test, P < 0.05, marked by “*”). Labelling efficiency was highest using two pulses; fluorescent signal was significantly higher than the signal of samples porated using one or four pulses (marked by “*”). MRI signal was significantly higher compared to the case of one pulse (marked by “+”) and comparable to the sample porated using four pulsesBack to article page