分类目录归档：blood
This is a painting from the 16th century from Lucas Cranach the Elder.
It shows the famous Fountain of Youth.
If you drink its water or you bathe in it, you will get health and youth.
Every culture, e
Most people think
that new technology or advanced technology can never start in Africa.
Instead, they think that the best way to help the continent advance
is by providing aid or services
that the con
We live in a medication nation.
4.5 billion drug prescriptions will be prescribed by doctors like me
this year, in the United States alone.
That's 15 for every man, woman and child.
And for most of us
good afternoon there's a medical
revolution happening all around us and
it's one that's going to help us conquer
some of society's most dreaded
conditions including cancer and the
revolution is called
It's often said that despite humanity's many conflicts,
we all bleed the same blood.
It's a nice thought but not quite accurate.
In fact, our blood comes in a few different varieties.
Our red blood
If you lined up all the blood vessels in your body,
they'd be 95,000 kilometers long
and everyday, they carry the equivalent of over 7,500 liters of blood,
though that's actually the same four or fiv
Which of these has the least carbohydrates?
This roll of bread?
This bowl of rice?
Or this can of soda?
It's a trick question.
Although they may differ in fats, vitamins, and other nutritional conten
At any given moment, trillions of cells are traveling through your blood vessels,
sometimes circling the body in just one minute.
Each of these cells has its origins deep in your bones.
Bones might
In 1881, doctor William Halsted rushed to help his sister Minnie,
who was hemorrhaging after childbirth.
He quickly inserted a needle into his arm,
withdrew his own blood, and transferred it to her
High above the floor of Nevada’s Black Canyon,
a group of men repelled down the cliff face.
Suddenly, a man stumbled over the canyon rim.
He plummeted past the men, too fast for them to grab—
when