ufo's abduct specific group

i have heard that ufo's abduct a specific group of people who have o negative blood type.

And also I heard that people with o negative blood heal faster than others. And as human beings have a reptilian brain as well as a mammal brain ( i think its called amydala), could it be that we are a hybrid race with reptilian dna?

and could it be that people with o negative blood have more reptilian dna? ufo's must need these guys for their bybrid experiments and also for hormone extraction.

ufo's use to abduct cows in the 1980's i think it was, and there has been reports of cattle mutilations. then the government made a deal with them so ufo activity can be more of a secret. cows have a hormone that the greys need to survive. the greys have a genetic disorder that can be because of the wars that took place on their planet and the aftermath of that.
now greys discovered that human beings have this hormone that these animals have.

for blood transfusions, people with o negative blood can donate blood to any blood group but they themselves can only receive o negative blood. thats interesting.