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. 2014 Jun;10(6):20140308. doi: 10.1098/rsbl.2014.0308

Table 1.

Sperm bundle and solitary sperm velocity. Mean velocity ± s.e. (µm s−1) of sperm bundles and solitary spermatozoa at four viscosity levels (n, number of males sampled; the total number of sperm bundles or solitary sperm analysed is given in parentheses).

0.0% PVP
n = 17		 0.5% PVP
n = 6		 1.5% PVP
n = 6		 4.0% PVP
n = 5
sperm bundle 18.75 ± 1.26 (137) 21.66 ± 1.46 (41) 19.60 ± 1.60 (67) 20.72 ± 1.26 (40)
solitary sperm 14.08 ± 0.96 (188) 20.06 ± 2.19 (46) 14.89 ± 1.81 (80) 9.67 ± 1.36 (55)