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MB Sample ID: SA024487

Local Sample ID:G315
Subject ID:SU000499
Subject Type:Animal
Subject Species:Mus musculus
Taxonomy ID:10090
Species Group:Mammal

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Treatment:

Treatment ID:TR000513
Treatment Summary:A total of 27 seven-week-old C57BL/6 female mice randomly into 6 groups, and then whole body being exposed to either gamma or proton radiation. The individually housed animals were fed a standard diet and maintained in an environment controlled facility with an ambient temperature of 22-25°C and 45% relative humidity on 12 h light-dark cycle. Mice were exposed to whole body gamma radiation using a high-activity source (1250 keV 60Co) with the linear energy transfer (LET) associated with these fields in the range of 0.2-2 keV/μm. The mice were isolated in the corner of their polymer cages and placed a minimum of 100 cm from the collimated 6000 Ci (222 TBq) 60Co source, and then irradiation to the proposed dosage, respectively. The result of absorbed dose rate at a depth of approximately 600 mg/cm2 were ~0.83 Gy/min relative to tissue. After irradiation the isolation barrier was removed and mice were transferred to Animal Facility.Mice placed into aerated polystyrene boxes immediately before exposure to the entrance region of proton at the BNL Alternating Gradient Synchrotron (AGS) (1055 MeV/nucleon at the target, with a track-averaged LET =148.2 keV/μm at target). Doses of 0 and 3.0 Gy were delivered to a maximum of four mice at ~0.83 Gy/min in a single fraction. All procedures (i.e., placement in aerated boxes and subsequent tissue harvesting) for the control mice were identical to those of irradiated animals, except that they received no radiation.
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