xmlns:atom="http://www.w3.org/2005/Atom" xmlns:atom="http://www.w3.org/2005/Atom"
3. In rule 17 —
(a)in the heading, for “Micro-organisms” substitute “ Biological material ”;
(b)in the rule, for “require for their performance the use of micro-organisms” substitute “ involve the use of or concern biological material ”.