+D1c designates a specific, subtle [subtype](/wiki/subtype) within a broader classification system. Often, its presence signifies a crucial [genetic marker](/wiki/genetic-marker) or a distinct cellular state, influencing unique biological pathways.
+## See also
+- [Gene Expression](/wiki/gene-expression)
+- [Protein Structure](/wiki/protein-structure)
+- [Biological Classification](/wiki/biological-classification)
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