Table 3.

Mean retention coefficients (± SEM) in the concentration steps before and after diafiltration. CF = concentration factor [37].

	Serum-Containing Medium			Serum-Free Medium
Retention Factor	hcDNA	Total Proteins	Total RNA	hcDNA	Total Proteins	Total RNA
Pre–CF: 4 (n = 8)	0.41 ± 0.10	0.29 ± 0.08	0.36 ± 0.13	0.24 ± 0.08	0.11 ± 0.05	0.62 ± 0.16
Post–CF: 4 (n = 7)	0.55 ± 0.08	0.52 ± 0.04	0.57 ± 0.18	0.65 ± 0.13	0.20 ± 0.14	0.50 ± 0.13
Post–CF: 8 (n = 12)	0.61 ± 0.05	0.48 ± 0.03	0.57 ± 0.12	0.58 ± 0.09	0.15 ± 0.08	0.49 ± 0.10