Figure 7.

Imaging of roots from plants exposed to QD suspension in HS + HA. For (A) 1 and (B) 7 days [74].HS, Hoagland's solution; HA, one of the important groups of organic acids.

Valizadeh et al. Nanoscale Research Letters 2012 7:480   doi:10.1186/1556-276X-7-480
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