(1) Schedule 5 (which lists the pathogens and toxins in relation to which the requirements of this Part apply) has effect.
(2) [deleted]
(3) [deleted]
(4) In this Part "dangerous substance" means- (a) anything which consists of or includes a substance for the time being mentioned in Schedule 5; or (b) anything which is infected with or otherwise carries any such substance.
(5) But something otherwise falling within subsection (4) is not to be regarded as a dangerous substance if-
(a) it satisfies prescribed conditions; or
(b) it is kept or used in prescribed circumstances.