We detected surface area N on both contaminated cells and non-infected neighboring cells24. N, like all N proteins, is extremely positively billed, and binding of endogenous N and cell-derived or recombinant N to cells needs heparan sulfate/heparin (really negatively charged proteoglycan), as demonstrated through the abrogation of binding by enzymatic https://rna-beads15813.blogolize.com/the-5-second-trick-for-magnetic-beads-dna-extraction-68950579