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Abstract
A novel method of Schwann cell purification from neonatal rat sciatic nerve has been developed using differential adhesion. After enzymatic and mechanical dissociation, the cell digest is allowed to settle on polylysine-coated glass coverslips for 30 min with intermittent shaking. After an 18-h incubation, bipolar cells comprise greater than 95% of the non-adherent population. Indirect immunofluorescence with the cell-specific markers rabbit anti-galactocerebroside and rabbit anti-bovine-P-2 basic protein antiserum confirmed light microscopic identification of these bipolar cells as Schwann cells. Rabbit anti-human fibronectin specifically labeled fibroblasts which comprised less than 5% of the cell population, but did not bind to Schwann cells. Schwann cells isolated by differential adhesion were injected into a rabbit. When absorbed with cultured rat skin fibroblasts, serum from this rabbit specifically surface labeled greater than 99% of the bipolar and round cells after 18 h and 5 days in vitro and also labeled Schwann cells in fetal rat dorsal root ganglia cultures, but not fibroblasts or neurons.
Published Version
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