| 摘要 |
An object of the present invention is to provide a method of identifying a substance which acts on a newly found second human prostaglandin D<SUB>2 </SUB>receptor subtype that differs from the DP receptor, and is useful for treating or preventing various diseases. In order to attain the object, the present invention provides a method of identifying properties of a test substance with respect to a human prostaglandin D receptor, by establishing correlation between the effect of a test substance on human CRTH2 with the effect of the test substance on the human prostaglandin D receptor.
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