McKinnell, R.G.Gorham, E.Martin, F.B.Schaad, J.W.2013-04-212013-04-211979McKinnell RG, Gorham E, Martin FB, Schaad JW. Increased prevalence of mature females bearing pigmented oocytes from populations of Minnesota Rana pipiens. Laboratory Animal Science 1979;29:66-68.https://hdl.handle.net/11299/147966Bacteria and cancer in leopard frogs (Rana pipiens)Increased prevalence of mature females bearing pigmented oocytes from populations of Minnesota Rana pipiensArticle