Figure 1.

Dog notochordal cells in culture. Dog notochordal cells were cultured for 7 days on PS control (A, C) and S20 PPE:N (B, D) surfaces. Pictures were taken using an Axiovert 25 microscope (Carl Zeiss Canada, Kirkland, QC Canada). Similar results were obtained with the other PPE:N surfaces. The bars in A and B equals 250 μm while in C and D equals 50 μm.