Answer:
ryes, i think saliva could also be used as a sample material in solving murder cases because salva has ur dna in it it came from ur body and its like regular liquid for example blood on a murder seen they collect the blood to see if there any DNA. also in ataragating rooms most of the time they ask you to open up your mouth and they put a cotton swap and im pretty sure they do this because there getting the DNA in there mouth
