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Dinoflagellates of the supergroup Alveolata and their characteristic alveoli.
An adult male killer whale with its characteristic tall dorsal fin swims in the waters near Tysfjord
Hartmann's mountain zebra resting, showing its characteristic essentially unbarred belly
Young boy with characteristic nasal crease from the repeated action of the “nasal salute” caused ...
Cushing’s syndrome. A photograph of a woman with the characteristic facial features of Cushing’s syn
(a) The characteristic karyotype of Klinefelter syndrome. (b) The young man (left) in these photos h