h, Comparison of the rates of degradation of long-lived proteins in MCF7.control cells (squares, clone 38), MCF7.beclin1 cells (circles, clone 17) and MCF7.beclin1stop cells (triangles, clone 70), in EBSS + 10% serum and complete amino acids (open symbols, solid lines) in EBSS alone (closed symbols, solid lines), and in EBSS + 10 mM 3-MA (closed symbols, dotted lines). Results are mean (±s.e.m.) of triplicate wells. Similar results were obtained in three independent experiments. Results shown with these clones are representative of results obtained with other clones analysed by electron microscopy in g. 