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Dinoflagellates of the supergroup Alveolata and their characteristic alveoli.
Mackerel tabby, showing the characteristic "M" on its forehead.
Malignant melanoma. This photograph demonstrates the highly characteristic color of this tumor.
Emphysema. (a) Illustration comparing normal lungs and emphysemic lungs. The inserts illustrate how
(a) The characteristic karyotype of Klinefelter syndrome. (b) The young man (left) in these photos h
Each enzyme functions best within a characteristic range of pH