蚕豆根尖细胞微核诱导。第2部分。低于1厘戈瑞中子的生物学效应。

Micronucleus induction in Vicia faba roots. Part 2. Biological effects of neutrons below 1 cGy.

作者信息

Marshall I, Bianchi M

出版信息

Int J Radiat Biol Relat Stud Phys Chem Med. 1983 Aug;44(2):163-73. doi: 10.1080/09553008314550961.

Abstract

A dose-effect relationship has been established for high-energy neutrons (maximum energy 600 MeV) within a dose range of 0.2 to 80 cGy and for low-energy neutrons produced by a 252Cf source (mean energy 2.35 MeV) for doses between 0.2 and 5 cGy. The frequency of micronuclei was found to increase linearly with dose. The relative biological effectiveness (r.b.e) values calculated using 60Co radiation as a reference were, in the high-dose region, 4.7 +/- 0.4 and 11.8 +/- 1.3 for the high- and low-energy neutrons, respectively. At doses below 1 cGy constant values of 25.4 +/- 4.4 and 63.7 +/- 12 were reached for the respective neutron energies.

摘要

在0.2至80厘戈瑞的剂量范围内，已确定高能中子（最大能量600兆电子伏）的剂量效应关系；对于由252Cf源产生的低能中子（平均能量2.35兆电子伏），在0.2至5厘戈瑞的剂量范围内也确定了剂量效应关系。发现微核频率随剂量呈线性增加。以60Co辐射为参考计算的相对生物效应（r.b.e）值，在高剂量区域，高能和低能中子分别为4.7±0.4和11.8±1.3。在低于1厘戈瑞的剂量下，相应中子能量的常数值分别达到25.4±4.4和63.7±12。