Biased motion of motile cells in a concentration gradient of a chemoattractant is frequently studied on the population level. Here, we review the mechanisms by which mammalian sperm cells are guided to the egg. ) as in (a), only that the cumulus-cultured medium dilution was 1:100. Contributed reagents/materials/analysis tools: la bmf. The strength of the chemotactic response was obtained by the odds ratio (o.
More than 40 sperms were recorded for each experiment. ) that used a parallel laminar flow stream to distinguish motile from poor-quality sperms.