Figure 4.
Danio rerio morphology after PG and GO treatment. (A,B) A zebrafish embryo 4 h after fertilization; (C) chorion covered with GO; (D) coagulated embryo; (E) properly developed embryo 96 h after fertilization, control group; (F–I) embryo deformities after PG (F,H) and GO (G,I) treatment. Black arrows indicate graphene agglomerates. White arrows indicate embryo deformities.