9 CFR 101.7 - Seed organisms.

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§ 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]

Title 9 published on 14-Sep-2017 03:43

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

  • 2016-08-30; vol. 81 # 168 - Tuesday, August 30, 2016
    1. 81 FR 59427 - Viruses, Serums, Toxins, and Analogous Products; Packaging and Labeling
      GPO FDSys XML | Text
      DEPARTMENT OF AGRICULTURE, Animal and Plant Health Inspection Service
      Final rule.
      Effective October 31, 2016.
      9 CFR Parts 101, 103, 112, 113, and 114