Figure 5From: Cell-associated bacteria in the human lung microbiomeOrdination of bacterial communities in whole and acellular BAL aliquots from the same BAL sample. Unsupervised principal component analysis (PCA) labeled as (A) sample groups [whole BAL aliquots (blue) and acellular BAL aliquots (green)]; (B) sample groups with centroids added; (C) sample groups with corresponding whole and acellular BAL aliquots connected via lines. X and Y (red and yellow circles, respectively) are regions with close proximity of corresponding whole and acellular BAL aliquots; region Z (purple circle) contains whole BAL aliquots far removed from their acellular BAL counterparts. (See text.) (D) Biplot analysis of PCA plot with prominent OTUs labeled.Back to article page