Stop pushing the issue — I'm not interested.

The Fas ligand (FasL) is a key death factor of cytotoxic T lymphocytes and natural killer cells.

The fight is not all one-sided. Lion is taking a savage beating as the two flagships trade body blows almost independent of the furious carronade going on behind them.

The United States Patent Office classified search files currently consist of about 18 million United States patent documents, about 12 million foreign patent documents, and about 2 million documents of nonpatent literature.