Fig. 6

Schematic diagrams in the sagittal and coronal planes of the human sinonasal cavity. Sites of sampling for microbiome analysis: deep nasal vestibule swab, deep to the vibrissae past the squamous mucosal epithelial junction (a), head of inferior turbinate swab (b), middle meatus swab (c), uncinate process biopsy (d), maxillary sinus swab (e) and biopsy (f), ethmoid sinus swab (g) and biopsy (h), superior meatus swab (i) and biopsy (j), and sphenoid sinus swab (k) and biopsy (l). Figure adapted from “Atlas of Endoscopic Sinus and Skull Base Surgery,” ed. Palmer, J.N., Chiu, A.G., Adappa N.D. Elsevier, Philadelphia (2013)