Figure 8From: Characterization of early and terminal complement proteins associated with polymorphonuclear leukocytes in vitro and in vivo after spinal cord injuryInfiltrating PMNs in the injured spinal cord are associated with the early and terminal complement proteins 3 days post-SCI. Cells isolated from spinal cord (T8-T10) of control (A) or injured rats (B & C) were labeled with a FITC-conjugated anti-PMN antibody and a Cy5-conjugated antibody for C1q, C3, C7 or C5b-9, or appropriate IgG controls before analyzed on a FACS Calibur flow cytometer. After 3 days following SCI (B), the number of cells positive for C1q, C3, C7, or C5b-9 was elevated compared to that from control (A). However, only some of the complement-positive cells were PMNs (C & E) and that most PMNs that infiltrated the injured spinal cord were also positive for C1q, C3, C7, and C5b-9 (C & D). All flow cytometric gates were set using control IgG isotype labeled cells. # = significantly (P < 0.05) different from uninjured control (Con). n = 5. Number of experiment replication = 2.Back to article page