See T. vaginalis in action!
Several YouTube videos:
http://www.youtube.com/watch?v=XVNJQZLJRJw
This is a phase microscopy view of a vaginal swab with T.
vaginalis.
http://www.youtube.com/watch?v=ohu92MByJJM
A contrast of phase microscopy and regular, white light
microscopy
http://www.youtube.com/watch?v=c3F0nsT5zro&feature=related
A closer view