biological enzymes for medical use; kits for use in cDNA synthesis for medical purposes comprised of reagents, buffers, reverse transcriptase, oligomer; compositions for use in nucleic acid fluorescence staining for medical purposes; kits for use in nucleic acid fluorescence staining for medical purposes consisting of reagents, buffers, staining reagents; compositions for use in DNA sequence analysis for medical purposes; kits for use in DNA sequence analysis for medical purposes consisting o...