Fig. 2From: Quantitative analysis of vitamin D using m/MALDI-TOF mass spectrometry based on a parylene matrix chipCharacterization of the parylene matrix chip. a Scheme of the mixing zone of parylene-N film. b Amplex Red assay reaction with H2O2 and peroxidase. c Fluorescence image of Amplex Red assay with or without the parylene-N film. d Fluorescence images of bare plate, CHCA matrix, and parylene matrix chipBack to article page