The Hematopoietic System Influences Odor Specificity in Mice and Rats

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Abstract
The change in strain-specific urine odors which appears after bone marrow transplantations was examined in mice and rats in order to demonstrate an influence of the hematopoietic system on urinary chemosignals. Four rats were trained in an olfactometer to discriminate two allogeneic mouse or rat strains via their urine odors. Urine samples obtained from two inbred strains of mice, from two inbred strains of rats, from allogeneic reconstituted mice, and from semiallogeneic reconstituted rats were combined in a number of ‘transfer of training’ tests. Results confirm findings that the hematopoietic system influences odor specificity in mice. For the first time a change of urinary chemosignals after bone marrow transplantation in rats was demonstrated by using semiallogeneic reconstituted rat chimeras.

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