Table 2.

Results of cell culture experiment.

	Seeding cells	Passage 3	Passage 4	Passage 5	Passage 6
C1 (× ${10}^6$)	0.060	0.303	0.638	0.618	0.437
C2 (× ${10}^6$)	0.060	0.330	0.603	0.643	0.460
Average (× ${10}^6$)	0.060	0.317	0.621	0.631	0.448
Multiples of seeding cells	1.00	5.28	10.34	10.51	7.48
U1 (× ${10}^6$)	0.060	0.507	0.732	0.848	0.618
U2 (× ${10}^6$)	0.060	0.451	0.732	0.787	0.590
Average (× ${10}^6$)	0.060	0.501	0.732	0.818	0.604
Multiples of seeding cells	1.00	8.35	12.20	13.63	10.07

The initial number of cells in all passages is 60,000 cells. The number of cells for each passage and the increased cell fold was summarized.