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shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae
Oral cavity: (A) sagittal section; (B) anterior view as seen through the open mouth.
Localization of a Peptide The peptide is revealed by means of immunocytochemistry. The photomicrogra
The Laocoön Group, Roman copy, perhaps after Agesander, Athenodorus, and Polydorus of Rhodes.
Group defenses: Cluster of sawfly caterpillars regurgitating fluid (yellow) that predators find unap
Yearly growth of tree trunk (cross-section)