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Table 1 Number of Z. maha individuals used in Hiyama et al. (2012) [1]

From: The Fukushima nuclear accident and the pale grass blue butterfly: evaluating biological effects of long-term low-dose exposures

Field work or laboratory experiment

Number of individuals

Field collection in May 2011 (PMay)

144

F1May from PMay

2,516

F2May from F1May

538

Field collection in September 2011 (PSeptember)

238

F1September from PSeptember

1,563

External exposure experiment

401

Internal exposure experiment

542

Total

5,942