Biological and chemical products and preparations, namely, kits consisting primarily of an anion exchanger, a silica column, salt solutions, and ethanol or isopropanol for isolation of nucleic acids from urine and other body fluids all for scientific and research purposes and not for medical or veterinary use; and diagnostic kits consisting primarily of oligonucleotide primers and probes with homology to a nucleic acid sequence of interest, polymerases and other enzymes, nucleotides, salt sol...