Table 2: Quantitative TRSAM evaluation at a center frequency of 1 GHz for thickness, sound velocity, acoustic impedance, density, elastic modulus, and attenuation of MCF-7 breast cancer cells during cell division (From Strohm, Czarnota et al. 2010 and Strohm, Pasternak et al. 2010).

-	Interphase	Metaphase	Water
Thickness [ µm ]	11.0 ± 2.0	18.9 ± 1.3	NA
Sound velocity [ m/s ]	1570 ± 15	1567 ± 11	1521
Acoustic impedance [ MRayls ]	1.561 ± 0.014	1.554 ± 0.015	1.521
Density [ g/cm3 ]	994 ± 13	992 ± 9	1000
Elastic modulus [ GPa ]	2.45 ± 0.03	2.43 ± 0.03	2.31
Attenuation [ dB/cm/MHz ]	1.44 ± 0.15	1.10 ± 0.25	0.0014