Table 2. . Days to a successful culture and expansion of cancer cells.

Variable	Patients (n)	Mean number of days to successful culture ± standard deviation	p-value
Tissue source:
– Lymph nodes	37	116.0 ± 69.2
– Viscera	20	88.6 ± 61.0	0.34
– Cutaneous	15	87.4 ± 68.0	0.20
Stage at time of tumor collection:
– Recurrent stage 3	29	108.7 ± 69.1
– Stage 4	43	98.2 ± 66.8	0.50
Geographic source of tumor:
– California	48	105.9 ± 75.5	0.56
– Non-California	24	95.4 ± 47.5
Specific trial and era:
– Single arm (2000–2007)	54	101.9 ± 66.1
– Randomized (2007–2010)	18	103.8 ± 72.7	0.92