Figure 2. Relationship between cumulative exposure to collision sports and baseline serum biomarker concentrations.

No significant correlations were noted for any biomarker (A–G). Aβ₄₂ = β-amyloid peptide 42; CNPase = 2′,3′-cyclic-nucleotide 3′-phosphodiesterase; GFAP = glial fibrillary acidic protein; MAP2 = microtubule associated protein 2; S100B = S100 calcium binding protein B; UCH-L1 = ubiquitin carboxy-terminal hydrolyzing enzyme L1.