Bony spicules in guinea pig lung.
D000818:Animals; D006168:Guinea Pigs; D008171:Lung Diseases / Q000473:pathology / Q000662:veterinary*; D008679:Metaplasia / Q000662:veterinary*; D009999:Ossification, Heterotopic / Q000662:veterinary*; D012376:Rodent Diseases / Q000473:pathology*