Figure 1
From: Brain-derived neurotrophic factor and its receptor in the human and the sand rat intervertebral disc
Immunolocalization of brain-derived neurotrophic factor in human intervertebral discs. (a) Outer annulus, subject number 14, L3 to L4. (b) Outer annulus, subject number 4, L1 to L2. (c) Nucleus, subject number 14, L3 to L4 (arrow marks nearby negative cell). (d) Outer annulus, subject number 4, L1 to L2 (note nearby cell that does not show localization). (e) Inner annulus, subject number 14, a cluster of cells (arrow marks one of the negative cells that lies near the positive cells). (f) Negative control. Bars: (a) 10 μm, (b) 0.1 μm, (c) 10 μm, (d) 10 μm, (e) 10 μm, (f) 10 μm.