Alkaline phosphatase specific activity measured in Caco-2/HT29-5M21 co-cultures (open bars) and in mixtures (black bars) of these cells in the proportions 3:1, 2:2, 1:3. Results are expressed as specific activity (SA, μmol/min.mg protein). **p < 0.01, ***p < 0.001 (N = 3).
Nollevaux et al. BMC Cell Biology 2006 7:20 doi:10.1186/1471-2121-7-20