Science doesn't care about what you or I believe.  It's about collecting data and it must have a logical process to be studied.  With your comment, you clearly have not sat on a board that is responsible for approving studies.  All studies must undergo such a process.  

As for the comment of toxins, everything is a poison at the right dose.  That same "toxin" that you're worried about is ubiquitous in the soil.  Your terminology of toxins, splicing, show you don't have a clear understanding of this technology and why it's being used.  Where are you reading this from?

As for it being found in blood, howcould you definitely point out that it's source is GMO foods and why aren't every single person not experiencing disease? That "study" that you're using as a source used a method that can give false positives because it's not mean to test for Bt in blood.  It's also a single study that must be repeated to build evidence for the claim.  

Note that the Br "toxin" is once again a protein.