In the medium term, not all effects are negative.

从中期角度来说，并不是所有影响都是消极的。

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The cells, which were cultured in standard culture medium, were negative.

使用标准培养液的传代细胞均为阴性。

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The cells, which were cultured in standard culture medium, were negative.

使用标准培养液的传代细胞均为阴性。

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