Examlex
Astronomers observe unobscured X-rays generated in active galactic nuclei.
Dysentery
An infectious disease causing severe diarrhea with the presence of blood and mucus in the feces.
Dys-
A prefix denoting difficult, painful, or abnormal.
Enamel
The hard, protective outer covering of the crown of a tooth, made of mineralized substances.
Cementum
A specialized, calcified substance covering the root of a tooth, playing a vital role in tooth stability by anchoring the tooth to the jawbone through the periodontal ligament.
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