自然形質転換したL細胞(L-N)の増殖制御機構について

1) The L-0 cell absolutely required serum for proliferation, but L-N cell grew rapidly in serum free medium. 2) L-N cell cultured in MEM medium with TPB reached high saturation density as in serum containing medium. 3) The growth rate of L-N cell in serum free medium was dependent on initial density of cell population just before logarithmic growing phase. 4) L-N cell rounded cell cycle from G-1 phase to S phase 4 hours faster than L-0 cell.