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Examples of different phenotypes of zebrafish embryos at 24 h post fertilization (hpf) found in the bioassay described in the Section 2.6 “Toxicity”. (a) Normally developed embryo; (b) embryo with underdeveloped eye, brain and impaired extensions of yolk sack and tail; and (c) dead embryo. Ear; eye; y: yolk; ye: yolk extension; V-s: v-shaped somite; U-s: abnormally-shaped somite; tb: tail bud; and de: decomposing embryo. Scale bar equals 1 mm.
