Arthritis, Experimental/immunology; Arthritis, Experimental/pathology; Inflammation Mediators/physiology; Leukotriene B4/metabolism; Receptors, Leukotriene B4/physiology; Animals; Arthritis, Experimental/metabolism; Arthritis, Rheumatoid/immunology; Arthritis, Rheumatoid/metabolism; Arthritis, Rheumatoid/pathology; Bone Marrow Cells/immunology; Bone Marrow Cells/metabolism; Bone Marrow Cells/pathology; Chemotaxis, Leukocyte/genetics; Chemotaxis, Leukocyte/immunology; Humans; Inflammation Mediators/metabolism; Knee Joint/immunology; Knee Joint/metabolism; Knee Joint/pathology; Leukotriene B4/physiology; Mice; Mice, Inbred BALB C; Mice, Inbred C57BL; Mice, Knockout; Mice, Transgenic; Neutrophils/immunology; Neutrophils/metabolism; Neutrophils/pathology; Receptors, Leukotriene B4/biosynthesis; Receptors, Leukotriene B4/deficiency