Selective Oral Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor ZD1839 Is Generally Well-Tolerated and Has Activity in Non–Small-Cell Lung Cancer and Other Solid Tumors: Results of a Phase I ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Resonance isn’t just a drawing trick — it’s a core principle that explains molecular stability, acidity, and reactivity. By delocalizing electrons across atoms, molecules can lower their energy and ...

THE electron spin resonance spectrum of glycollic acid irradiated at 77° K has been reported previously 1, and consists of two doublets of unequal intensity, each with a separation of about 20 gauss.