далд алтны уурхайн үйлдвэрлэлийн урсгалын үйл явц
цагаан алтны уурхайн үйл явц гэж юу вэ. Монгол. The polymerase chain reaction (PCR) is a biochemical technology in molecular biology to amplify a single or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence..
WhatsApp)
