Fig. 4

a Effects of the aqueous fraction (AF) from extract of the Antarctic moss Sanionia uncinata on hatching success of zebrafish embryos. Bars represent the mean ± standard deviation. The values do not differ significantly from each other (P > 0.001). b Representative photomicrographs of the absence of abnormalities in zebrafish at early life-stage induced by AF during 96-h of exposure. NC: negative control; PC: positive control; PE: pericardial edema; tail deformation (TD) and YS: delayed yolk sac absorption