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Reticulocyte counts on radiation and non-radiation workers at the RCN (1970)

Author	W.J.Carpaij
Date	April 1970
Classification	1.01.8.50/04 (PETTEN RESEARCH LOCATION - NRG/ECN/RCN - GENERAL)
Front

ABSTRACT

At a low dose (rate) ionizing radiation is assumed to act as a stimulus on the 
bone marrow. In case of a low stimulus the reticulocytes are the only immature 
cells which will appear in the circulating blood.
On the basis of these assumptions one could expect a higher number of 
reticulocytes in the circulating blood of radiation workers as compared to a 
control group (non radiation workers) (Radiation worker defined here as an 
employee regularly working in a controlled area).
During one year period, reticulocyte counts were performed on 989 male 
individuals, 392 radiation and 597 non radiation workers. All examinations 
were done by the same medical technician. The mean of the radiation group is
5.03 (s.d. 2.71) and of the control group 4.55 (s.d. 2.63). (The number of
reticulocytes per thousand erythrocytes is given). This difference is statistically 
significant at a 5% level. An analysis to reveal correlations between the number 
of reticulocytes and the radiation dose is made.

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