Figure 4From: Limited Dynamic Range of Immune Response Gene Expression Observed in Healthy Blood Donors Using RT-PCRSource of variance in gene expression. (A) Variance components estimated from mixed-effect models, representing variation between subjects (dark grey), between longitudinal samples from same subject (grey), and between replicate RT-PCR reactions for same sample (white). Systematic variations affecting all samples drawn on same date have been subtracted before estimating variance components. (B) Variance components expressed as percentages relative to sum of components.Back to article page