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Such oil can contain carcinogens and toxic mould .

这样的油含有致癌物质和有毒霉菌。

A single spore can quickly spread and form a mould .

一个孢就能很快长成一个霉菌.

Each flask contains enough mould to produce a single dose of penicillin .

每个培养瓶中都有足够的霉菌，用以生产一个剂量的盘尼西林。

During this process of growth the mould exudes peniciliin into the growth solution .

在此生长过程中，霉菌会将盘尼西林析出到培养液中。

The mould could be using the transposons to maintain the diversity of its weapons arsenal , he suggests .

他认为这种霉菌能够使用转座子来保持它“武器军火库”的多样性。