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Enhancement of tumor cell growth and invasiveness by transforming growth factor-beta (TGF-beta) requires constitutive activation of the ras/MAPK pathway. Here we have investigated how MEK activation(More)
The transport of iodide was studied in porcine thyroid follicle cells cultured in bicameral chambers. The continuous layer of polarized follicle cells, joined by tight junctions, formed a diffusion(More)