is now known to exist on the outer plasma membrane of stressed/cancer cells only
That's incorrect Biopharm..
If you search the NCBI database you will find numerous papers covering PS functionality.. PS is expressed on more than just "stressed" tumor cells.. This is common knowledge dating back years..
All the best, John
Disclaimer: Every post, and all my views are only speculative. Do not invest money or any other resources based on these post or opinions. Best of luck and do your own due diligence!