Tumor transplantation of BALB/c nude mice.

<p>Both HCCC-9810 and hUC-MSC or HCCC-9810 and HUVEC cells were mixed and subcutaneously inoculated into the nape region of BALB/c nude mice respectively. Tumor volume was calculated (cm³) = 1/2×lengt×width². Tumor formation and average volume were significantly different between the test group (HCCC-9810+MSC) and the control groups (**<i>P</i><0.05, versus controls). For the subgroups with only HCCC-9810 cells, the tumor volume in the post-treated group, which had been injected with conditioned media from hUC-MSC, was significantly lower than that of the control (*<i>P</i><0.01).