Safety Evaluation of Engineered Nanomaterials for Health Risk Assessment: An Experimental Tiered Testing Approach Using Pristine and Functionalized Carbon Nanotubes

<table>Histograms showing changes in percentage of (a) PCNA and (b) TUNEL Labelling Index of bronchiolar, alveolar and macrophagic cells after i.t. exposure to different CNTs (pristine MWCNTs versus lab-made functionalized MW-COOH and MW-NH<sub>2</sub>). A significant increase (Student’s <svg height="10.3875" id="M19" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 5.9250002 10.3875" width="5.9250002" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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International Scholarly Research Notices

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Figure 6

Figure 6: Safety Evaluation of Engineered Nanomaterials for Health Risk Assessment: An Experimental Tiered Testing Approach Using Pristine and Functionalized Carbon Nanotubes 

Figure 6 | Safety Evaluation of Engineered Nanomaterials for Health Risk Assessment: An Experimental Tiered Testing Approach Using Pristine and Functionalized Carbon Nanotubes 