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Impact of cryoprotectants on membrane integrity of cryopreserved and lyophilized strict anaerobes. Percentage of intact cells in fresh (t 0), and cryopreserved (Cryo) and lyophilized (Lyo) B. thetaiotaomicron (A), E. hallii (B), B. obeum (C), R. intestinalis (D), A. caccae (E) and F. prausnitzii (F) after 3 months storage in control (no protectant) and treated cultures (t2) (SI and GSI).
