What is often used instead into the A260 measurement for quantification of small amounts of RNA and DNA? For grinding difficult tissue or ligneous tissue, such as cone scales from gymnosperms, the tissue was floor less than liquid nitrogen in a mortar and pestle which was sterilized and baked (minimum https://caidendbyvr.blogdosaga.com/29553081/the-best-side-of-total-rna-purification-kit