For a Morris-Thorne wormhole in a cosmological background we analize the embedding surfaces and deduce an expression for the proper radial distance taking a conformal factor Ω = 1. Further. given the existence of an exotic material (negative energy density). the conditions to have a traversable wormhole are studied taking into account a cosmological background with a time depend... https://parisnaturalfoodes.shop/product-category/msm-cream/