Research Article

Influence of TiO2 Nanoparticles on Growth and Phenolic Compounds Production in Photosynthetic Microorganisms

Figure 4

The effect of TiO2 NPs on cell morphology showed by phase contrast microscopic images. (a) and (b) show images of Chlorella vulgaris (100x); (c) and (d) show images of Haematococcus pluvialis (40x); (e) and (f) show images of Arthrospira platensis (40x and 100x, resp.). Left columns (a, c, and e) show the images for control tests of each microorganism while right columns (b, d, and f) show images of TiO2 NPs treated microorganisms. Arrow marks indicate the cellular aggregations and cellular wall degradation.
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