Table 2.

Summary of effects of different doses of ionizing radiation on zebrafish embryos at 24 hpf after exposure to radiation at 2, 4, or 6 hpf

Irradiated stages	Doses (Gy)	Survival at 24 hpf (%)	Body shape abnormality at 24 hpf (%)
2 hpf (minimum no. of embryos = 12)	0	84.9	12.5
	1	89.7	12.2
	5	51.8	100*** (P = 0.0005)
	10	0*** (P = 0.0008)	NC
4 hpf (minimum no. of embryos = 9)	0	100	0
	1	96.9	3.3
	5	88.8	31.6
	10	94.8	100*** (P = 0.0005)
6 hpf (minimum no. of embryos = 11)	0	90.4	3.3
	1	79.1	13.8
	5	95.5	2.7
	10	93.5	57.2* (P = 0.0498)