Draft Guidance for Industry on Developing Medical Imaging Drugs and Biologics; Availability; Extension of Comment Period

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The Food and Drug Administration (FDA) is extending until April 14, 1999, the comment period for the draft guidance for industry entitled ``Developing Medical Imaging Drugs and Biologics.'' FDA published a notice of availability of the draft guidance in the Federal Register of October 14, 1998 (63 FR 55067). FDA is taking this action in response to requests for an extension.