- Pertaining to cytologic or histologic elements occurring where they are not normally found.
- Derived from an animal of a different species, as the serum of a horse is heterologous for a rabbit.
[hetero- + G. logos, ratio, relation]
See Also: xenogeneic
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.