Lung ultrastructure of the Arachnida-Archnoidea.
D000400:Air Sacs / Q000166:cytology*; D000818:Animals; D008168:Lung / Q000166:cytology*; D008854:Microscopy, Electron; D013112:Spiders / Q000033:anatomy & histology*; D014132:Trachea / Q000166:cytology