JCS -- Robinson et al. 116 (2): 377 Figure IG6

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Fig. 6. Linear regression analysis of surface tension versus volume of CHO-A5 aggregates after 5 ( ${circ}$ ) and 6 ( ${Delta}$ ) 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.