https://news.yale.edu/2020/12/01/how-spot-winning-sperm-examine-their-racing-stripes
Now full published: both HTML+PDF available online (12/1/2020) at https://elifesciences.org/articles/62043
Three-dimensional image showing the head (green) and CatSper1-labeled tail (red) of sperm cells travelling towards the fertilization site (to the left side of the image) in the reproductive tract (blue cells) of a female mouse. Image credit: Lukas Ded