Abstract: A pipette instrument 100 carrying interrogation circuitry 132 adapted to interrogate a data signal received from a removable instrumented pipette tip 114. The pipette 100 includes a microprocessor and memory 130 that can be programmed to perform data collection procedures. User controls typically include a start button 108, and a track wheel 110. A display device 112 can present device options through one or more menu, and show data resulting from one or more test result. The pipette can interrogate particles carried by a fluid flowing through a tip 114 by detecting either of or both of Coulter principle phenomena, and Stokes-shift phenomena.

Abstract: A pipette instrument 100 carrying interrogation circuitry 132 adapted to interrogate a data signal received from a removable instrumented pipette tip 114. The pipette 100 includes a microprocessor and memory 130 that can be programmed to perform data collection procedures. User controls typically include a start button 108, and a track wheel 1 10. A display device 1 12 can present device options through one or more menu, and show data resulting from one or more test result. The pipette can interrogate particles carried by a fluid flowing through a tip 1 14 by detecting either of or both of Coulter principle phenomena, and Stokes-shift phenomena.

Abstract: A method and apparatus for stimulating nerves in the central nervous system of a mammal to regenerate within the central nervous system applies an oscillating electrical field to the central nervous system across a lesion in the central nervous system. The polarity reversal period of the electrical field is long enough to stimulate growth of cathodally facing axons of the nerve cells in the central nervous system but is shorter than a die back period of anodally facing axons of the nerve cells.