Abstract: Compositions comprising a cell expressing an AC133 cell surface antigen and an antibody, or antigen binding fragment thereof, that specifically binds to the antigen are provided. Expression of the antigen is highly tissue specific. It is detected on a subset of hematopoietic progenitor and stem cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34bright and contains substantially all of the CFU-GM activity present in the CD34+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen can be further purified by selection for other hematopoietic stem cell and progenitor cell markers.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: A hematopoietic progenitor cell antigen and reagents, notably antibodies, that specifically bind to the antigen are provided. Expression of the antigen is highly tissue specific. It is only detected on a subset of hematopoietic progenitor cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34bright and contains substantially all of the CFU-GM activity present in the CD34+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen can be further purified by selection for other hematopoietic stem cell and progenitor cell markers.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: A battery adapter (A) replaces two batteries (10) with a single battery (10) housed within a compartment (48) of a battery powered electrical device (D). An electrically conductive housing (40) adapted to replicate a selected battery and fit within a space adapted to house two of the selected sized batteries. A step up circuit (18) mounted within the battery housing (40) receives an electrical signal from a single battery (10) and transforms the voltage of the electrical signal to simulate an electrical signal from two electrically connected selected batteries (10).

Abstract: A battery adapter (A) replaces two batteries (10) with a single battery (10) housed within a compartment (48) of a battery powered electrical device (D). An electrically conductive housing (40) adapted to replicate a selected battery and fit within a space adapted to house two of the selected sized batteries. A step up circuit (18) mounted within the battery housing (40) receives an electrical signal from a single battery (10) and transforms the voltage of the electrical signal to simulate an electrical signal from two electrically connected selected batteries (10).

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: A hematopoietic progenitor cell antigen and reagents, notably antibodies, that specifically bind to the antigen are provided. Expression of the antigen is highly tissue specific. It is only detected on a subset of hematopoietic progenitor cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34bright and contains substantially all of the CFU-GM activity present in the CD34+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen can be further purified by selection for other hematopoietic stem cell and progenitor cell markers.

Abstract: A transportable power source (P) for an image viewing device (D) includes a battery pack housing assembly (10) to internally hold a first battery pack (12). An electrical interface circuit (14) receives an input voltage level (16) and provides a resulting output voltage level (18) as an output therefrom to operate the viewer device (D). The interface circuit (14) receives a selected first input voltage level (20) from the first battery pack (12). Alternatively, the interface circuit (14) receives a selected second input voltage level (22) from a power supply source (S) external to the battery pack housing (10). The interface circuit (14) further includes a switch (24) for selecting between sources of input voltage levels from among at least the first input voltage level (20) and the second input voltage level (22). The switch (24) also selectively controls the source for the resulting output voltage level (18).

Abstract: A transportable power source (P) for an image viewing device (D) includes a battery pack housing assembly (10) to internally hold a first battery pack (12). An electrical interface circuit (14) receives an input voltage level (16) and provides a resulting output voltage level (18) as an output therefrom to operate the viewer device (D). The interface circuit (14) receives a selected first input voltage level (20) from the first battery pack (12). Alternatively, the interface circuit (14) receives a selected second input voltage level (22) from a power supply source (S) external to the battery pack housing (10). The interface circuit (14) further includes a switch (24) for selecting between sources of input voltage levels from among at least the first input voltage level (20) and the second input voltage level (22). The switch (24) also selectively controls the source for the resulting output voltage level (18).

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: A hematopoietic progenitor cell antigen and reagents, notably antibodies, that specifically bind to the antigen are provided. Expression of the antigen is highly tissue specific. It is only detected on a subset of hematopoietic progenitor cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34bright and contains substantially all of the CFU-GM activity present in the CD34+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen can be further purified by selection for other hematopoietic stem cell and progenitor cell markers.

Abstract: Enriched neural stem and progenitor cell populations, and methods for identifying, isolating and enriching for neural stem cells using reagent that bind to cell surface markers, are provided.

Abstract: A probe (10) has a main body (12), an input side (14) and an output side (16). The main body (12) has a cavity (17) to receive an insulator (18). The insulator (18) has a current slit (22) and a voltage slit (24) aligned with a first aperture (30a) and a second aperture (30b). An inner conductor extends through the insulator (18) from the input side (14) to the output side (42) of the main body (12). A current sensor (40) inserts into the first aperture (30a) and the current slit (22). A voltage sensor (50) inserts into the second aperture (30b) and the voltage slit (24). A radio frequency signal on a transmission line having a same impedance as the probe (10) enters the inner conductor (20) at the input side (14), induces a current onto the current sensor (40) and a voltage onto the voltage sensor (50). The induced current and voltage can be measured to monitor the characteristics of the transmission line.

Abstract: An hematopoietic progenitor cell antigen, and antibodies that specifically bind to the antigen are provided. Expression of the antigen is highly tissue specific. It is only detected on a subset of hematopoietic progenitor cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34.sup.bright, and contains substantially all of the CFU-GM activity present in the CD34.sup.+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen may be further purified by selection for other hematopoietic stem cell and progenitor cell markers.

Abstract: A method and apparatus is provided for reducing wall erosion in a plasma containment tube (20), such as, for example, a quartz plasma tube (20) used in a microwave-induced plasma reaction process for etching semiconductor wafers. A pure benign or non-corrosive gas (Ar) is introduced into the "upstream" section (22a) of the tube (22), where the microwave energy is imparted to create a plasma. The activated benign gas flows "downstream" through a flange (28), preferably made of quartz, which is seated on o-rings (50) inside a water-cooled metal flange (48). These sealing o-rings (50) are thus cooled and removed from the ultraviolet light created by the plasma. The corrosive etchant gas (SF.sub.6) is introduced into the "downstream" section (22b) of the tube (22) beyond the flange (28), where it is activated by the benign gas (Ar). The benign gas (Ar) flows principally along the inner sidewalls of the tube (22), and the etchant gas (SF.sub.