Biomedical Engineering Reference
In-Depth Information
FIGURE 8.1
Representative transmission electron (A) and scanning electron (B) micro-
graphs of RAW264.7 macrophages with engulfed PS-coated SWCNT. RAW264.7 macrophages
(0.3 × 10
6
cells/ml) were incubated for 2 h with PS-coated SWCNT. Arrows indicate SWCNT.
From Shveda 2009. (For color version of this figure, the reader is referred to the online version of
this topic)
cell damage that included inflammation and formation of lesions or granulo-
mas.
77
This is contradictory to the assumptions that CNTs are less hazardous
than graphite causing the research and business communities to invest heavily
in carbon nanotubes for a wide range of products. Supporting data gathered in
other studies also suggests that under certain conditions, such as those involving
chronic exposure, CNTs can pose a serious risk to human health.
80,82,83
These
in vivo studies suggested the need for extensive research before introducing
CNTs-enabled products into the market to avoid long-term damage. The studies
conducted are a good example of strategic, highly focused research for safe and
responsible development of nanotechnology.
