microheterogeneity
noun
mi·cro·het·ero·ge·ne·ity
| \ -ˌhet-ə-rō-jə-ˈnē-ət-ē
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plural microheterogeneities
Medical Definition of microheterogeneity
: variation in the chemical structure of a substance (as the amino acid sequence of a protein) that does not produce a major change in its properties