Table 3.

Maximum viable cell concentrations in 8 SFM designed by the fractional factorial method.

SFM	Maximum viable cell concentration (105 cells/ml)
	Set #1	Set #2	Set #3
SFM #1	15.03	25.38	39.60
SFM #2	5.12	7.83	7.95
SFM #3	17.91	24.84	49.32
SFM #4	4.56	4.62	7.02
SFM #5	15.75	28.80	37.80
SFM #6	5.42	4.72	6.52
SFM #7	18.45	19.44	42.66
SFM #8	8.55	6.03	4.89

PBMCs were obtained from three different donors (Set #1, Set #2, and Set #3). The seeding density was 5 × 10⁵ cells/ml.