[Code of Federal Regulations]
[Title 9, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 9CFR101.7]

[Page 623]
 
                  TITLE 9--ANIMALS AND ANIMAL PRODUCTS
 
  CHAPTER I--ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF 
                               AGRICULTURE
 
PART 101_DEFINITIONS--Table of Contents
 
Sec. 101.7  Seed organisms.

    When used in conjunction with or in reference to seed organisms, the 
following shall mean:
    (a) Master Seed. An organism at a specific passage level which has 
been selected and permanently stored by the producer from which all 
other seed passages are derived within permitted levels.
    (b) Working Seed. An organism at a passage level between Master Seed 
and Production Seed.
    (c) Production Seed. An organism at a specified passage level which 
is used without further propagation for initiating preparation of a 
fraction.

[49 FR 22625, May 31, 1984]