In order to get the best results,lymph nodes and brain stem must be collected within 48 hours,if not,your chances of a false postive rises highly.CWD is not a highly contagious disease,like blue tounge.Like I stated above you could test 1000 deer and only have 1 test positive.The protein theory:why will deer eat certain kinds of corn and not others,same as for alfa and also soybeans(All have different % of Protein) All crops are not the same.One theory is the level of chemicals sprayed and engineered seed farmers use today.CWD has a similiar T7 code like alzheimers and Creutzfeldt-jakob disease in humans.There isnt a silver bullet to prevent these diseases.However the DNR should not use this excuse to justify mercy killing and fill there pockets with Fed. dollars.The Mn DNR blames livestock producers for this problem and also the Bluffland club.The Bluffland members account for 1% of hunters in Mn. I understand the DNR isnt perfect,but there needs to be a change in how it budgets.The enforcement division needs to be removed.If half of there budget was given to local sheriff departments many more arrests would happen!!! Dan if you choose to believe the Protein Theory or SERC then you need to blame crop farmers for their engineered seed to produce ethanol.Todays crops I agree isnt the same crop like it was 20 years ago.Kind of makes you wonder where MS and the different kinds of cancer and disease are stemming from.The point I am trying to make is by going out and mercy killing isnt going to help anything.I do believe todays crop farming practices is hurting our Natural Resource and human life alot more than you think.I call as I see it! based on research !!some of those facts from the SERC are not accurate and have been proven wrong, there are some good points stated but there is not a silver bullet.