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years
of normal Japanese. In the case of erythrocytes, 2 years after the expusure,
the curve approximately came back to normal. A similar tendency is seen
in the cumulative distribution curves of platelets.
However,in a few cases slight neutropenia is still observed. Figure 5 shows
the changes of total leukocytes, neutrophils, and lymphocytes of 2 cases which
are representative for severe injury.
A small increase of “mitotically connected abnormalities”, i. e. karyomeres
of erythroblasts, were observed in bone marrow smears of a few cases after
10 years.
=
Cytogenetical studies have been performed since several years.
The
results are summarized as follows (IsnmHarna and Kumatoni 1965; 1967; 1969).
1. The frequency of aneuploid cells was 2~3 per cent, which was not
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