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Pathogens identified by TEM examination of BALF.
| Pathogens | Number of positive samples |
|---|---|
| Viruses | 24 |
| Mycoplasma | 16 |
| Chlamydia | 18 |
| Fungi | 2 |
| Bacteria | 74 |
| Cocci | 45 |
| Bacilli | 39 |
| Mixed infections | 61 |
Abbreviations: BALF, bronchoalveolar lavage fluid; TEM, transmission electron microscopy.
