A miniaturized multi-layer balun includes a pair of capacitive elements, at least one section of broadside coupled lines connected in series to a unbalanced and two balanced ports through a pair of transmission lines. The RNA aptamers selectively bind coagulation factors, E2F family members, Ang1 or Ang2, and therapeutic and other uses for the RNA aptamers are also disclosed. A control circuit for charging or discharging bit lines controls the gate voltage of the PMOS or NMOS transistor to limit peak current when charging or discharging bit lines via the virtual power node. The heater tube may also have an outer surface extending from the open end to the closed end. A process for producing a lamp of this type is also disclosed. In one embodiment, the process also includes the step of passing an eluent formed by the elution step through a second sorbent material that is configured to remove a preselected material from said eluent.