Fig. 2.

Cytotoxicity of 100% C.sinensis brew against primary corneal stromal cells by fluorometric quantification of RNA and DNA contents in corneal cells using acridine orange stain. Although there was a reduction of RNA concentration at 48 h, the trends for both brews showed an increase of RNA concentration at 72 h. There was no significant difference between the DNA concentration of the control and cold brew, however there was a slight difference between the DNA concentration of the hot brew and the control at 72 h post-treatment with C. sinensis. * p < 0.05; ns, p > 0.05.