Fig. 6. Linear regression analysis of surface tension versus volume of CHO-A5 aggregates after 5 () and 6 () days in culture. The surface tension of CHO-A5 aggregates cultured for 5 days remained relatively constant over a threefold range in volume. Linear regression analysis generated a correlation coefficient (r²) value of 0.164, indicating that surface tension at 5 days is size independent. At 6 days in culture, however, a greater degree of scatter in the data gave rise to an r² value of 0.550, indicating size dependence.

Return to article