From MicrobeWiki, the student-edited microbiology resource
Flourescence micrograph of Giardia
trophozite stained with antibiodies against tubine (green), hilighting its eight flagella, and with DAPI (blue) to visualize the DNA in the two nuclei. By Marianne Poxleitner, University of California, Berkeley. Logsdon, J.M. 2008. Evolutionary Genetics: Sex happens in Giardia. Current Biology 18: R66-R68..