Fig. 4
From: Platelet studies in autism spectrum disorder patients and first-degree relatives
Plasma serotonin and CRP levels in ASD patients, siblings, and pediatric controls. a Plasma serotonin levels were measured using an ELISA in a selection of ASD patients (n = 30), siblings (n = 30), and age-matched controls (n = 16). Line and whiskers indicate mean and SEM. Groups were compared using the Mann-Whitney U test. b Plasma CRP levels were measured using an ELISA in the same selection of ASD patients (n = 30), siblings (n = 30), and age-matched controls (n = 16). Line and whiskers indicate mean and SEM. Groups were compared using the Mann-Whitney U test