Relative abundance of microbial OTUs in the ex-plant and postmortem lungs. Each row represents a different OTU, and the abundance as a percentage of the total population is indicated by color. Phyla are indicated on the left, and a subset of OTU classifications is indicated on the right. A complete list of OTU classification appears in . Lung regions are abbreviated as RUL for right upper lobe, RML for right middle lobe, RLL for right lower lobe, LUL for left upper lobe, Ling for left lingula and LLL for left lower lobe. LLLA indicates the left lower lobe anterior and LLLP indicates the left lower lobe posterior. Trach indicates the tracheal sample.