Reagent kit for extraction of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and protein primarily composed of magnetic beads, complex salts, buffers, solvent, detergent, and enzyme for scientific and research purposes; reagent kit for polymerase chain reaction (PCR) downstream application primarily composed of magnetic beads, complex salts, buffers, nucleotides, and enzyme for scientific and research purposes; reagent kit for quantitative polymerase chain reaction (QPCR) downstream app...