[davidflora]

Hiiiii....I read your informative post and you are true we can get saliva from DNA.Saliva will contain epithelial cells from the inside of the mouth. These are nucleated and hence a source of DNA. A DNA profile can be obtained from saliva and saliva stains. For forensic analysis the inside cheeks of the mouth are swabbed and provide the DNA for profiling.
Your saliva leaves a DNA fingerprint that not only says who you are, but also whether you have a genetic predisposition for certain diseases. This wealth of information contained in saliva makes it a promising alternative to blood as a source of DNA for genetic testing, according to a report in this month’s issue of the Journal of Immunological Methods.