Table 3. Total Number of Observed Bacterial Sequences from Culture Negative BAL.

BAL ID #	Number of sequence reads
32	52,154
34	29,880
42*	82,728
69	74,117
70	64,639
133*	99,040
137*	58,499
164*	103,107
186*	89,426
189*	73,684
196	98,240
197*	77,000
201*	92,188
208*	143,487
209*	87,493
All BAL Samples	1,227,232

*screening BAL.