Exemption under section 10(23C)(iv) notifies a clinical research foundation subject to charitable application and compliance conditions. Notification recognises T.T. Raganathan Clinical Research Foundation, Chennai under section 10(23C)(iv) for assessment years 2002-2003 to 2004-2005, subject to conditions: apply income wholly and exclusively to its objects or accumulate for that purpose; restrict investments and deposits to permitted modes; exclude business income unless incidental and separately accounted; regularly file income-tax returns; and transfer surplus and assets on dissolution to a similar charitable organisation.