上世纪60年代，美国科学家发现... 美国科学家=Drs. Wall and Wani.
when reviewing history, proper credit should be given to those who deserve it. but it is ok since this is a mere informercial.
Consequently the treatment of one cancer patient consumes approximately eight 60-year old yew trees.
eight 60-year old yew trees= 6 100-year old yew trees
https://www.news-medical.net/health/Paclitaxel-Production.aspx
