Fig. 2From: Serotonin-secreting enteroendocrine cells respond via diverse mechanisms to acute and chronic changes in glucose availabilityPurification of guinea pig EC cells from the colon. (a) bright field image of two primary EC cells in culture, (b) fluorescent image of the nuclear stain, DAPI, (c) 5-HT labelling, (d) merged image of 5-HT staining and DAPI. Scale bar = 4 μm. (e) Percentage of 5-HT positive cells in our cultures (n = 3 independent cell cultures)Back to article page