The mitochondrion is present in almost all eukaryotes, with the exception of anaerobic protozoa such as " Trichomonas vaginalis " that instead reduce protons to hydrogen in a remnant mitochondrion called a hydrogenosome.
22.
For example, it may be used in the treatment of women exhibiting vaginal discharge where there is uncertainty as to whether the cause is " Trichomonas vaginalis " or " Candida " strains such as " Candida albicans ".
23.
"Trichomonas vaginalis ", a parasitic protist, is not known to undergo meiosis, but when Malik et al . tested for 29 genes that function in meiosis, they found 27 to be present, including 8 of 9 genes specific to meiosis in model eukaryotes.
24.
Sequence analysis further suggests that the C9ORF72 protein emerged early in eukaryotic evolution, and whereas most eukaryotes usually possess a single copy of the gene encoding the C9ORF72 protein, the eukaryotes Entamoeba and Trichomonas vaginalis possess multiple copies, suggestive of independent lineage-specific expansions in these species.
25.
In addition to the evidence cited above for recombination in " Giardia ", Malik et al . reported that many meiosis specific genes occur in the " Giardia " genome, and further that homologs of these genes also occur in another unicellular eukaryote, " Trichomonas vaginalis ".
26.
This type of movement appears similar to the undulating membrane of the sexually-transmitted pathogen " Trichomonas vaginalis " and can result in a false-positive diagnosis in cases where " B . saltans " is a contaminant in test samples, especially if a nonsterile saline solution has been used.
27.
"' Jane M . Carlton "'is a biologist at New York University whose research centers on the genomics of two groups of single-celled parasites : those which cause malaria ( the genus Plasmodium ), and a group known as trichomonads, which include the common sexually transmitted parasite Trichomonas vaginalis.
