A hard disk drive that includes a head that is coupled to a disk. The ablation system comprises: an energy source and a catheter. The invention relates in addition to a method for examination of the surface of rolled products 20 of a milling station. Such dendrimer conjugates are useful in the treatment or prevention of protein aggregate-relates diseases, in disinfectiondecontamination processes and in classifying or identifying protein aggregates. A controller communicates with the valve and the sensor.