1460947990-3e2348d6-eef1-4596-938e-6e8c54139dcf

1. A hanger bar assembly comprising:
a first hanger bar member comprising a first rail comprising a first end, a second end, and a first attachment structure disposed on the first end;
a second hanger bar member comprising a second rail comprising a first end, a second end, and a second attachment structure disposed on the first end, the second hanger bar member being adjacent to the first hanger bar member, wherein the second hanger bar member slidably engages the first hanger bar member;
wherein the first and the second attachment structures each comprise a first fastener aperture, a first wall, and a second wall and wherein the first wall comprises the first fastener aperture and the second wall comprises a second aperture;
a first fastener maintained in the first fastener aperture of the first attachment structure; and
a second fastener maintained in the first fastener aperture of the second attachment structure.
2. The hanger bar assembly of claim 1, wherein the second apertures are configured to allow the first and the second fasteners to pass therethrough in an unimpeded fashion.
3. The hanger bar assembly of claim 1, wherein the first wall and the second wall of each of the first and the second attachment structures are substantially parallel to one another.
4. The hanger bar assembly of claim 1, further comprising at least a first stub extending between the first wall and the second wall of the first attachment structure, and a second stub extending between the first wall and the second wall of the second attachment structure, wherein the first and second stubs are configured to maintain separation between their respective first and second walls.
5. The hanger bar assembly of claim 4, wherein the first and the second stubs each extend from the respective first wall and toward the respective second wall.
6. The hanger bar assembly of claim 1, wherein the first fastener and the second fastener are each maintained in one of the first fastener apertures by a friction fit.
7. The hanger bar assembly of claim 1, wherein each of the first and the second fasteners is a nail.
8. The hanger bar assembly of claim 1, wherein each of the first and the second fasteners is a screw.
9. The hanger bar assembly of claim 1, further comprising a mounting flange extending outwardly from an edge of at least one of the first attachment structure and the second attachment structure, the first mounting flange being substantially perpendicular to the respective attachment structure.
10. The hanger bar assembly of claim 9, further comprising a first mounting slot in the mounting flange.
11. A luminaire, comprising:
a lamp disposed within a housing;
a frame coupled to the housing;
a hanger bar assembly, wherein at least a portion of the hanger bar assembly is coupled to the frame, the hanger bar assembly comprising:
a first hanger bar member comprising a first rail comprising a first end, a second end, and a first attachment structure disposed on the first end;
a second hanger bar member comprising a second rail comprising a first end, a second end, and a second attachment structure disposed on the first end, the second hanger bar member being adjacent to the first hanger bar member, wherein the second hanger bar member slidably engages the first hanger bar member;

wherein the first and the second attachment structures each comprise a first fastener aperture;
a first fastener maintained in the first fastener aperture of the first attachment structure; and
a second fastener maintained in the first fastener aperture of the second attachment structure.
12. The luminaire of claim 11, wherein the first and second attachment structures each comprise a first wall and a second wall, wherein the first wall comprises the first fastener aperture and the second wall comprises a second aperture and wherein at least a portion of the first and second apertures are horizontally aligned with each other.
13. The luminaire of claim 12, wherein the second apertures are configured to allow the first and the second fasteners to pass therethrough in an unimpeded fashion.
14. The luminaire of claim 12, wherein the first wall and the second wall of each of the first and the second attachment structures are substantially parallel to one another.
15. The luminaire of claim 12, further comprising at least a first stub extending between the first wall and the second wall of the first attachment structure, and a second stub extending between the first wall and the second wall of the second attachment structure, wherein the first and second stubs are configured to maintain separation between their respective first and second walls.
16. The luminaire of claim 15, wherein the first and the second stubs each extend from the respective first wall and to the respective second wall.
17. The luminaire of claim 11, wherein the first fastener and the second fastener are each maintained in one of the first fastener apertures by a friction fit.
18. The luminaire of claim 11, wherein each of the first and the second fasteners is a nail.
19. The luminaire of claim 11, further comprising a mounting flange extending outwardly from an edge of at least one of the first attachment structure and the second attachment structure, the first mounting flange being substantially perpendicular to at least a portion of the respective attachment structure.
20. A hanger bar assembly comprising:
a first hanger bar member comprising a first rail comprising a first end, a second end, and a first attachment structure disposed on the first end;
a second hanger bar member comprising a second rail comprising a first end, a second end, and a second attachment structure disposed on the first end, wherein the second hanger bar member slidably engages the first hanger bar member;
a mounting flange extending outwardly from an edge of at least one of the first attachment structure and the second attachment structure, the first mounting flange being substantially perpendicular to at least a portion of the respective attachment structure;
wherein the first and the second attachment structures each comprise a first fastener aperture;
a first fastener maintained in the first fastener aperture of the first attachment structure; and
a second fastener maintained in the first fastener aperture of the second attachment structure.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

We claim:

1. Hybridoma cell line ATCC HB 12190.
2. The monoclonal antibody produced by the hybridoma cell line of claim 1.
3. A method for identifying a compound that modulates the interaction of binding partners ICAM-R and CD11b, said method comprising the steps of:
(a) immobilizing ICAM-R or CD11b;
(b) detectably labeling the non-immobilized binding partner;
(c) contacting said immobilized binding partner with said labelled binding partner in the presence and absence of a test compound;
(d) detecting label bound to said immobilized binding partner;
(d) identifying a modulating compound as a test compound that affects the label bound in the presence of said test compound in comparison to the label bound in the absence of said test compound.
4. A method for identifying a compound that modulates the interaction of binding partners ICAM-R and CD11b comprising the steps of:
(a) immobilizing ICAM-R or CD11b on a solid support coated or impregnated with a fluorescent agent;
(b) labelling the non-immobilized binding partner with a chemical capable of exciting said fluorescent agent;
(c) contacting said immobilized binding partner with said labelled binding partner in the presence and absence of a test compound;
(d) detecting light emission by said fluorescent agent; and
(e) identifying a modulating compound as a test compound that affects the label bound in the presence of said test compound in comparison to the label bound in the absence of said test compound.
5. A method for identifying a compound that modulates phosphorylation of ICAM-R by protein kinase C isoform comprising the steps of:
(a) exposing ICAM-R peptide comprising amino acids 482 to 518 of SEQ ID NO: 1 to protein kinase C isoform and labeled phosphate in the presence and absence of a test compound;
(b) measuring labeled phosphate transferred to said ICAM-R peptide; and
(c) identifying a test compound that affects transfer of said labeled phosphate as an modulator compound.