A prior section 403C of act July 1, 1944, was renumbered section 403D and is classified to section 283a–3 of this title.

2016—Subsec. (a)(2). Pub. L. 114–255 struck out “(not including any leaves of absence)” after “time”.

2007—Subsec. (a). Pub. L. 110–85, § 1104(5)(A), substituted “graduate students supported by the National Institutes of Health” for “each degree-granting program” in introductory provisions.

Subsec. (a)(1). Pub. L. 110–85, § 1104(5)(B), inserted “such” after “percentage of”.

Subsec. (a)(2). Pub. L. 110–85, § 1104(5)(C), inserted “(not including any leaves of absence)” after “average time”.

Section applicable only with respect to amounts appropriated for fiscal year 2007 or subsequent fiscal years, see section 109 of Pub. L. 109–482, set out as an Effective Date of 2007 Amendment note under section 281 of this title.