art_2__para
Definitions For the purpose of this Directive: (b) 'micro-organism` shall mean a microbiological entity, cellular or non-cellular, capable of replication or of transferring genetic material; (c) 'cell culture` shall mean the in-vitro growth of cells derived from multicellular organisms; (d) 'biological agents` shall be classified into four risk groups, according to their level of risk of infection:
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Source: EUR-Lex (Cellar) · retrieved 2026-11-09 · Text as adopted (Official Journal); later amendments are not incorporated in this text.