This issue of Breast Disease focuses on the subject of signal transduction and its role in the pathogenesis and progression of human breast cancer. Within the past 10 years, the explosion in our knowledge of these processes has significantly altered our understanding of breast cancer, and resulted in the first receptor-based therapies. This issue examines a variety of relevant signaling pathway...

Arabinogalactan proteins (AGP) are a class of cell surface plant peptidoglycans which have been implicated in root elongation and signal transduction pathways. AGPs function not only as markers of cellular identity but also as signaling molecules, which might initiate signal transduction. Aluminum promotes the elongation of tea (Camellia sinensis L.) roots. Although some mechanisms by which Al ...