The decision to strip-mine was opposed by environmentalists.

Even though PXR was initially identified as a xenobiotic receptor, emerging evidence has pointed to an equally important role of PXR as an endobiotic receptor that responds to a wide array of endogenous chemicals (endobiotics), such as bile acids and their intermediates, as well as certain steroid hormones.

A subset A of a free group F is called separable when there is a non-trivial free factorization F = F₁ * F₂ such that each element of A is conjugate to an element of F₁ or of F₂.

Do we have any lit homework tonight?