We detected surface N on the two contaminated cells and non-contaminated neighboring cells24. N, like all N proteins, is very positively charged, and binding of endogenous N and cell-derived or recombinant N to cells necessitates heparan sulfate/heparin (highly negatively charged proteoglycan), as demonstrated from the abrogation of binding by enzymatic https://judahifbyt.designertoblog.com/61092845/the-basic-principles-of-magnetic-beads-dna-extraction