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. 2021 Jan 8;11:61. doi: 10.1038/s41598-020-79732-x

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Lobactis scutaria sperm samples (n = 14) were treated with four different solutions for 5 min, and the total concentration and corresponding sperm motility were measured on a CASA. A flow cytometer was used to ground-truth the fresh total concentration of the sperm samples. (a) The total concentration of the L. scutaria sperm was measured by CASA under four different conditions, using FSW (filtered seawater); BSA (Bovine Serum Albumin); BSA-CAFF (Bovine Serum Albumin and Caffeine); and CAFF (Caffeine). No difference was observed amongst the means (ANOVA; P = 0.08, F = 2.22), suggesting that the treatments had no effect on the measured mean total concentrations. (b) The resulting mean total sperm motilities were different based on treatments; CAFF was the highest with almost double the mean motility (ANOVA; P < 0.001, F = 18.1). The small letters indicate treatments that are different. Error bars are SE.