Figure 2: Correlation between MCH and mycobacterial growth in the whole blood MGIT assay.
From: The influence of haemoglobin and iron on in vitro mycobacterial growth inhibition assays

Spearman’s correlations between mean corpuscular haemoglobin (MCH) at baseline and in vitro BCG Pasteur growth in (a) whole blood and (b) PBMC of 19 healthy UK adult volunteers at 4 weeks (circles) and 8 weeks (triangles) following BCG vaccination. Previously BCG vaccinated and naïve volunteers were grouped together. Points represent the mean of duplicate cultures. Δ log10 CFU = (log10 CFU of sample − log10 CFU of control).