. 2016 Aug 3;57(4):343–355. doi: 10.1093/jrr/rrv104

Table 4.

Expected and observed amounts of apoptosis for combined high-dose alpha-particle irradiation and high-dose uranium exposure

No. of embryos^a	Expected	Observed	P (Case 1^b)	P (Case 2^c)	Interaction
144	1.11 ± 0.09	1.26 ± 0.11	0.161	0.162	Additive

The expected values (N_<IH>UH or N_IH<UH>) and observed values (N_IHUH ^†) of apoptosis for the combined effects of ∼4.4 mGy alpha-particle irradiation and exposure to 100 µg/l uranium concentration for 1 h on the 24 hpf Zebrafish embryos, indicating whether the interactions were additive, synergistic or antagonistic. ^aReferring to the total number of embryos in all four sets of samples. ^bN_IH ^† was added to each embryo in the U_H group. ^cN_UH ^† was added to each embryo in the I_H group.