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The C57BL/6 cauda epididymal fresh sperm and post thaw progressive motility (A) velocity parameters; curvilineal velocity (B), average path velocity (C), and progressive velocity (D) for either fresh or frozen-thawed C57BL/6 sperm. The results are presented as averages across groups (n = 12 per treatment group). CD: cervical dislocation. Low: low-flow CO2. High: high-flow CO2. Error bars represent standard error of mean. * indicates significance.
