After a huge outcry from parents, the government promised that it would lower the permissible level and that it would pay to remove contaminated topsoil from school grounds.
But this reaction would take too long to be effective for most pollution and would not remove contaminating particles.
Mr. Takaki said the government would pay for local schools with radiation levels above that limit to remove contaminated topsoil from their grounds.
It has been temporarily closed since July to remove contaminated soil.
Attempts were made in several of those areas to remove contaminated soil.
To minimize radiation dose to maintenance personnel, remove contaminated components that are not easily decontaminated.
For quantitative RT-PCR, total RNA was treated with DNA remover to remove contaminating genomic DNA.
DNase treatment was performed to remove contaminating genomic DNA.
Cells were shaken overnight at 90 rpm to remove contaminating oligodendrocytes, microglia and neurons.
Samples were DNase treated to remove contaminating genomic DNA per the manufacturer's instructions (Ambion).
