The Role of Glucose, Serum, and Three-Dimensional Cell Culture on the Metabolism of Bone Marrow-Derived Mesenchymal Stem Cells

Table 3

Summary of results pertaining to trypan blue diffusion through collagen gels. The diffusivity for both cell densities is roughly the same. *Relative drag coefficient and relative diffusivity values were calculated by normalizing against that of water (there was no significant difference between the diffusivity values of the 2.5 mg/mL and 5.0 mg/mL groups).

	Water		2.5 mg/mL		5.0 mg/mL
	Mean	Range	Mean	Range	Mean	Range
Drift velocity (m/s)	0.04	N/A	2.8𝐸−07	2.5𝐸−07 to 3.0𝐸−07	2.5𝐸−07	2.3𝐸−07 to 2.7𝐸−07
Accel. (m/s^2)	0.0	N/A	−3.9𝐸−12	−4.4𝐸−12 to −3.3𝐸−12	−2.6𝐸−12	−2.8𝐸−12 to −2.2𝐸−12
Relative drag coef.*	1.0	N/A	5.9𝐸+04	−1.6𝐸+05 to 3.3𝐸+05	2.1𝐸+05	1.8𝐸+05 to 2.3𝐸+05
Relative diffusivity*	1.0	N/A	6.9𝐸−06	6.4𝐸−06 to 7.6𝐸−06	6.3𝐸−06	5.8𝐸−06 to 6.7𝐸−06