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Disease out-break , increased mortality and higher percentages of cull birds could adversely affect profitability of egg type layers . With the minimal extensions to the access network , provision of the mobility service for the unmodified IPv6 nodes can also be achieved . The problem is that no one knows what these hydropower projects will really cost . The company is now working on making discrete tasks appear to happen in one spot , although the tasks will actually be conducted within the different systems . After triggering more than 800 eggs to begin dividing , Galli 's group permitted the resulting embryos to grow to a stage at which the researchers could non-surgically implant the 22 surviving embryos into the uteruses of surrogate mares .