A bunch of loners: Fluorescent nanodiamonds (FNDs) noncovalently conjugated with bovine serum albumin (BSA) or α-lactalbumin exhibited good dispersibility in a buffer with only minor or no agglomeration. They are useful as photostable fluorescent markers in cells for superresolution imaging by STED (see confocal fluorescence image of an FND-labeled cell (left) and STED image of single BSA-conjugated FNDs (right)).
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