Fig. 4
From: Holi colours contain PM10 and can induce pro-inflammatory responses
Light Microscopic images of human PBMCs together with Holi colours or corn starch. a–e shows 200 fold magnifications of native preparations of human PBMCs incubated for 4 h together with corn starch (a), Holi colour 1 (b), Holi colour 2 (c), Holi colour 3 (d) and Holi colour 4 (e). Cell sizes are indicated in black and particle sizes in red and the respective radiuses are stated. (Note that very small particles could not be indexed.) f displays a 400 fold magnification of cells incubated overnight with Holi colour 3, then stained with the nucleic acid dye Syto 9 and analysed in the green fluorescence channel