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AMENDMENT TO THE PUBLIC HEALTH SERVICE ACT 
Sec. 102. Title IV of the Public Health Service Act is 
amended (1) by redesignating part I as part J, (2) by re- 
designating sections 471 through 476 (and all references to 
such sections) as sections 486 through 491, respectively, and 
(3) by inserting after part H the following new part: 
“Part I — Recombinant DNA 
“definitions 
“Sec. 471. Por purposes of this part: 
“ (1) The term ‘DNA’ means deoxyribonucleic acid. 
“(2) (A) Except as provided in subparagraph 
(B), the term ‘recombinant DNA’ means DNA mole- 
cules that (i) consist of DNA segments which have 
been joined together in a cell-free system and (ii) have 
the capacity to enter in a cell and to replicate in such 
cell either autonomously or after they have become an 
integrated part of such cell’s genome. 
“(B) The term ‘recombinant DNA’ does not include 
DNA molecules — 
“ (i) which consist entirely of — 
“(i) DNA segments which are derived 
from the chromosomal DNA of prokaiyotic 
cells, 
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