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publishers/providers full-text online publisher of information in url subscription/membership/fee required Nature Publishing Group
aggregators author manuscript free resource Europe PubMed Central
aggregators full-text online subscription/membership/fee required Ovid Technologies, Inc.
aggregators author manuscript free resource show icon PubMed Central
culture/stock collections free resource Cellosaurus - a cell line knowledge resource
free resource SciCrunch
free resource SciCrunch
patent databases free resource The Lens