Figure 1

Comparison of whole BAL specimens by whether bacterial DNA was detected in acellular specimens. When whole BAL specimens were analyzed according to whether bacterial DNA was detected in their acellular fraction, specimens with bacterial DNA in the acellular fraction had more associated neutrophilia (A), more bacterial (16S) DNA as measured by qPCR (B), and lower community diversity as measured by the Shannon Index (C). LOD, level of detection.