9 CFR 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.
Title 9 published on 2015-01-01
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 9 CFR Part 101 after this date.