For experiments, PC-12 cells were collected via 0.25% trypsin (Gibco) and seeded for culturing in collagen IV (Sigma-Aldrich) coated 4-chamber slides (Nunc Lab-Tek, Merck). PC-12 cells grew as small clusters in suspension and were maintained in a density 5 × 105 cells/ml in culture flasks coated by 0. For those who have virtually any concerns regarding exactly where in addition to how to employ manufacturer of sialic acid powder for Supplement Ingredients, you are able to call us at the website. 1% collagen type IV (Sigma-Aldrich). For testing bioactivity of polySia avDP20, murine embryonic stem cell-derived microglia (ESdM) cells were seeded in 1.