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RNA expression reagents intended to aid in the differentiation among various forms of interstitial lung disease (e.g., asbestosis, hypersensitivity pneumonitis, idiopathic pulmonary fibrosis, sarcoidosis). These molecular assay reagents determine the levels at which certain genes are expressed (i.e., the gene activity ) in lung biopsy samples. These tests typically use predetermined analytic algorithms to assess the RNA expression profile for patterns consistent with specific forms of interstitial lung disease.
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