Background: This paper we appear the light on the effect a weak gamma radiation with chronic irradiation on White blood cells defend. Object: Exposure with ionizing wave has various effect on the several hematological parameter and tissue of biological. Our paper were scoped to detecting the soft dose radiation rate of gamma wave effect on several blood parameter of white mice. Material and Method: In this paper a mice with white color were employed in this work which scale about (two to three) age months and 26 to 35 weight gm. These mice with healthy were produced from the veterinary collage in University of Mosul. Keeping these mice were obtained in cages of plastic equipped with metal lids with dimensions (21x31x31 cm) states were put to ensure good hygiene. Results: Decline of total mean value of WBC count was obtained in the, neutrophil monocyte, lymphocyte, basophil and eosinophil, with a weak dose rate of irradiation 110 mGy/h and 310 mGy/h of irradiation part at 3 days and increased with declining arraival to irradiation time at 41 days .However rebuilding and recovery were happened at 61 days of time of irradiation.

White Blood Cell Parameter, Hematological, White mice, Radiation Dose Rate, Gamma Wave.