That mother was told she need not worry that her children are carrying 2,4-D
in their bodies, because it is becoming more common to find 2,4-D
residues in urine samples across the United States.
Contamination levels were estimated by comparing root length of Arabidopsis seedlings 10 days after plating (DAP) grown on hormone-free MS medium poured in 2,4-D
contaminated plates against the root length of plants on MS medium supplemented with 0.
After isolation of mRNA using Trizol, mRNA from two sources (for example 4th generation 2,4-D
and 4th generation control) was labeled with Cy5 and Cy3 using PCR and hybridized to a Drosophila microarray.
This study and EPA's comprehensive review confirmed EPA's previous finding that the 2,4-D
tolerances are safe.
The failure of GE-glyphosate (Roundup) tolerant crops to live up to their promises is a main contributing factor behind the development of stacked varieties of 2,4-D
GE corn and soybean.
DATA SOURCES: Data on urinary 2,4-D
excretion in general and target populations from recent published studies are tabulated and the derivation of BE values for 2,4-D
National Cancer Institute that deem 2,4-D
to be a valuable and useful herbicide that does not pose human health or environmental risks when used according to label instructions," Gray added.
Human lung fibroblasts exposed to 2,4-D
and MCPA showed a slight increase in proliferation at low concentrations (104 % and 112% at 3[micro]M, respectively compared to control at 100%) although for 2,4-D
this increase was not significant.
As it turned out, the herbicides 2,4-D
and endothall tainted the well water within just a few days in amounts that continued to climb for another 7 weeks.
In China, as of the end of 2011, the capacity of 2,4-D
technical has reached over 65,000t/a, maintaining an oversupply situation.
Results show a clear delay in development in subsequent generations of flies exposed to 3mM 2,4-D
and MCPA during their lifetime.
Exposure profiles were characterized with 24-hr urine 2,4-D
concentrations, which then were related to potential predictors of exposure.