蛋白质A琼脂糖/鲑鱼精子DNA，2.5 mL

蛋白质是细胞内部的主要功能分子，负责细胞功能和生存的多种生物学活动。值得关注的是，许多蛋白质也能与DNA发生相互作用。

Protein and nucleic acid interaction reagents and resources for investing protein-RNA, protein-DNA, and protein-protein interactions and associated applications.

"Epigenetics describes heritable changes in gene expression caused by non-genetic mechanisms instead of by alterations in DNA sequence. These changes can be cell- or tissue-specific, and can be passed on to multiple generations. Epigenetic regulation enriches DNAbased information, allowing a cell to vary its response across diverse biological and environmental contexts. Although epigenetic mechanisms are primarily centered in the nucleus, these mechanisms can be induced by environmental signals such as hormones, nutrients, stress, and cellular damage, pointing to the involvement of cytoplasmic and extracellular factors in epigenetic regulation."