Fig. 1
From: Transforming growth factor beta (TGF-β) in adolescent chronic fatigue syndrome
Multiple linear regression models exploring associations between neuroendocrine markers and isoforms of TGF-β in CFS patients (a) and healthy controls (b). Significant associations are indicated with a continuous arrow, whereas associations close to the level of significance are indicated with a dotted arrow. P-NorEpi plasma norepinephrine, P-Epi plasma epinephrine, P-Cortisol plasma cortisol, U-NorEpi urine norepinephrine-to-creatinine ratio, U-Epi urine epinephrine:creatinine ratio, U-Cortisol urine cortisol:creatinine ratio, P-TGF plasma transforming growth factor