A vacuum pipette has a filter grid that is shifted into its extended interior and whose cross section is considerably greater than the cross section of an end-side suction opening. This invention is ideally suited for deep submicron dimensions, preferably below 65 nm. The EL layer includes a compound which gives a first peak at a mz of around 266. A SELDI-TOF protein peak with an mz of 11,100 identified as cystatin B, was significantly lower in uninfected and HIV-infected PM than in MDM. The data encryption\\compression layer preprocesses the data as it moves between from the user space and the WORM filesystem layer.