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Neutron activation analysis of QD biodistribution following pulmonary exposure. Biodistribution of QD over time in rats intratracheally-instilled with 12.5 μg of QD-COOH (A) or QD-NH2 (B) using neutron activation to quantify the amount of cadmium (Cd) per organ. Organs measured were: left lung, lung-associated lymph nodes (LALN), blood, heart, liver, kidneys, brain, and spleen. No Cd was detected in the blood, heart, liver, spleen, or brain.
