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Infrared spectra of the coating of NHS-functionalized magnetic beads with metergoline. (A) Range from 600 cm−1 to 1800 cm−1 (B) Range from 2600 cm−1 to 3600 cm−1. (a) Metergoline coated NHS magnetic beads (b) Metergoline (c) Ethanolamine quenched NHS magnetic beads.
