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Adults usually get 1000 mcg of Vitamin B12 injected into a muscle
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For instance, CQDs derived from Actinidia deliciosa showed pH-dependent PL with fluorescence quenching in basic environments [ 2 clusters (blue emission), and longer wavelengths excite defect states (red-shifted emission) [ Optical characterisation using UVVis spectroscopy typically shows * transitions at 220280 nm (C=C bonds) and n* transitions at 280350 nm (C=O or CN bonds) [Figure 1C)
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