Table 1.

Values of the elastic modulus (means and standard errors) of several tumor types. Tumors were grown in immunodeficient mice and the diameter of the tumors used for these measurements ranged from 7 to 10 mm (15-30 days post-implantation of cancer cells).

Tumor	Origin	Elastic Modulus [kPa]	Compression Experiment	Reference
MCaIV	murine mammary carcinoma	6.67±2.67	Confined	[34]
LS174T	human colon adenocarcinoma	4.00±1.33	Confined	[34]
U87	human glioblastoma	26.66±1.33	Confined	[34]
HSTS 26T	human soft tissue sarcoma	40.00±5.33	Confined	[34]
SW620	human colon adenocarcinoma	186.1±25.9	Unconfined	[5]
MCF10CA1a	human breast cancer	64.08±8.47	Unconfined	[77]
4T1	murine mammary carcinoma	64.83±7.15	Unconfined	[77]
MIA PaCa2	human pancreatic carcinoma	141.83±3.91	Unconfined	unpublished data