The conflicting studies are among the issues the F.D.A. advisory committee is expected to discuss tomorrow.
The finding is the latest in a series of conflicting studies on the relationship between hormones and breast cancer.
Yet conflicting studies have shown that it is not available on the cell surface, but instead is found in significant amounts in the blood plasma.
In some conflicting studies involving Catholic girls' schools, there was no apparent explanation for why students did better.
Several conflicting studies have suggested that the two forms may or may not be bioequivalent.
Consider the two conflicting studies that appeared in scientific journals last month.
Two conflicting studies on the idea that protecting forests only relocates deforestation.
But 20 years of conflicting studies and accusations have yielded little progress.
Economists have come down on both sides of the issue with conflicting studies in many electricity markets.
There have been conflicting studies regarding the taxonomic status of the golden-crowned sifaka.