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U_____________
Definitions
The fine, detailed structure of a biological specimen that can only be observed by electron microscopy
Word origin
From ultra- + structure.
Used in a sentence
“The mucus film has a mesh-like ultrastructure that can trap particles as small as 0.1 μm.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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