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Bruised Tissue. II. Determination of the Age of a Bruise¹

The Ohio State University, Columbus, Ohio^,3

Abstract

A simple color test was devised for approximating the age of a bruise. This test is based on the presence or absence of bilirubin in a bruised tissue.

Conductivity measurements also can be used for determining the age of a bruise. It was found that the resistance offered by bruised tissue is quantitatively affected by the age of the bruise.

Using both the color test and the conductivity measurements of a bruised and control tissue, excised from symmetrically located areas, it is possible to determine the approximate age of a bruise.

¹ Published with the approval of the Associate Director, The Ohio Agricultural Experiment Station. Journal Article No. 61?56.

² The authors gratefully acknowledge the financial support of the Farmer Cooperative Service, United States Department of Agriculture.

³ Departments of Animal Science and Agricultural Biochemistry.