Table 1. Characteristics of the cells studied.

cell line	An(μm2)	Dn(μm)	Ref.	(μm)	ns (nm−3)
A549		9.6	46	7.5	1.2 × 10−3
AG1522	144 ± 45	13.4	23	10.6	4.2 × 10−4
HeLa	219 ± 3.5	16.7	47	13.0	2.2 × 10−4
NB1RGB	172 ± 2.2	14.8	48	11.6	3.1 × 10−4
A172	209 ± 3.2	16.3	49	12.7	2.4 × 10−4
EAhy926	95 ± 23	10.9	50	8.5	7.9 × 10−4
V79	88	10.6	20	8.2	7.2 × 10−4
CHO	127 ± 1.2	12.7	47	9.9	4.2 × 10−4

Cross sectional area, A_n, and diameter, D_n, of the cell nucleus, as well as an average length of ions’ traverse through a nucleus, , and the number density of complex damage sites on chromatin, n_s, for different cell lines considered in this study. Experimentally measured values of A_n and D_n are taken from the indicated references.