Fig. 3From: A simple method for taxon-specific purification of diatom frustules from ocean sediments using a cell sorterPhotomicrographs of the samples after chemical pretreatment. a, b Sample 382-U1538A-1-2, 24–25 cm. c, d Sample 382-U1538A-3-1, 24–25 cm. e, f Sample 382-U1538A-5-6, 24–25 cm. Images (a), (c), and (e) were taken with transmitted light; images (b), (d), and (f) were obtained by fluorescence imagingBack to article page