Inside every human body, there are roughly 37.2 trillion cells.
Each and every one working hard to maintain
a healthy, effective system 24 over seven.
And they all take their jobs very seriously.
Welcome to the inside of a human body.
All right, Let's see here.
Wait. Which way do I go? But I'm guessing you need some help.
Goodbye. What are you doing out this way? Forget that.
Let's focus on your non-existent sense of direction.
You lost again. Yeah. Sorry. Let me take a look.
Oh, I'm heading that way myself. You
want to just tag along with me? Yes, please.
That would be amazing. Thank you.
Heave ho! Heave ho! Heave ho! Heave ho! Heave ho! Heave ho.
They are so cute. The absolute cutest. Heave ho! Heave ho!
Heave ho! Oh, no. Platelets, halt! These are platelets.
They're a type of fragmentary blood component.
They aggregate wherever a blood vessel is damaged
in order to clot and cover the wound. There's a stairway.
I didn't know there were stairs this way.
Everyone be super careful.
It.
We made it down.
If you haven't seen.
Oh, lovely. Things
have been so peaceful in this blood vessel.
One.
Two, three, four. We are working for you.
Another day of sending 0202 all through
out the body, every nook and cranny felt.
Is confusing and I'm lost. I'm lost.
Though we may seem hopeless. We are selfless work for you and.
Let's get down to work. Every day's
a struggle, but I gotta pull through.
Another day, I'm out here slicing, slicing, filthy germs and viruses.
Show your ugly face won't let them get away.
I'll chase them. Chase some. We are
professionals where cells have worked for you. And so.
Let's get down to work. Let's get down to work.
Every day is a battlefield. You better prepare.
And we are only two.
So we don't know who you are.
Oh, you think we're working hard?
Of us together are supporting you with all of our hearts.
No matter what kind of dry, troublesome risk our lives,
we always take pride in what we do, and health comes first.
Are you working? Yes, I'm working. Are
you working? I'm working. Working for you.
Scrape wound.
Hey. Oh, I dropped one. Can someone get that?
You mean this? Yeah. You're the very best big sister.
Here. Glad to help. Thank you very much. And you're very welcome.
Hey, everybody. This looks like the perfect
place to wash the fibrin. Yay!
All right, then. Ready to head off to work? Yep.
Let's go. No, no, no. It's this way.
Oh, yeah. Totally knew that. You got
to make sure you get all these routes down pat.
That's the first step to doing this
job. You got that? Yes, ma'am.
It's always nice and peaceful in here.
I suppose so. But even still, you
want to make sure to stay on your toes from here on out, huh?
Any particular reason? This part of the blood
vessel is really close to the skin.
Even the slightest bit of trauma can have a huge knock.
Whoa. What in the world just happened?
The skin is very vulnerable to external stimulation.
We're lucky there wasn't much damage this time.
What are you talking about? Sometimes things can get.
What in the world was that? Oh, hey, look over there.
This isn't good.
Didn't think I'd run into you down here.
But I am so glad you did.
Does someone want to tell me why
the ground just collapsed? It seems kind of obvious.
There was external trauma to the blood vessel.
A part of the outer wall has been destroyed,
so blood cells are falling off the face of the world.
In short, it's an abrasion. An abrasion.
An abrasion, an injury formed when the skin is scraped,
resulting in a wound no deeper than the epidermis.
If we fall down there, it's the end for us too.
There's no coming back from something like that.
Wait. You mean like, permanent and forever?
Then why are we just sitting here?
We've got to hurry and do something. Calm down.
The wound itself will get taken care of in time.
Right now, we've got another problem to worry about. You see?
Here. Get down.
Filthy germs.
So this is what it's like inside a human body.
The rovers were right. Looks like a great spot to spawn.
I could get to like it here.
Staphylococcus aureus, a highly toxic antigen that commonly
resides in the skin and pores.
Should it enter the body, it can
cause a wide variety of dangerous ailments.
Among them are skin infections, food poisoning, pneumonia, meningitis and more.
He really didn't waste any time. Wipe out those cells.
Pleasure.
You guys get out of here, right?
Blah.
White blood cell. You're gonna end up getting sucked out.
Don't worry. I can handle this. Just get out of here.
You see what that jerk did? Let's
drag him out here and make him pay to go in.
Come on, We have to go.
What the. Why is the blood vessel constricting? I don't
know. Something big must have happened.
Vasoconstriction. When a blood vessel becomes injured,
it attempts to slow the bleeding by constricting.
It's a catastrophe. The skin gets scraped
and now there's a huge abrasion down there.
A gigantic army of bacteria is. Whoa. What did she.
Come on. Everybody get out of here right now.
Looks like your world now belongs to us.
Streptococcus pyogenes a bacteria that resides in
the throat, digestive organs and skin.
Though a common bacteria, it can lead to a variety of ailments.
It's enough. Red blood cells form a line
over there and drop the nutrients.
Pseudomonas one of the most common types
of bacteria existing in natural environments, well known for proliferating infections.
You can hand over the nutrients or die. Run.
The venous valve governs the directional flow of blood,
prevents blood from backing up and ensures
it flows one way through the vessels.
Time to die.
You want to kill me?
Weren't you listening? Any blood cells not delivering nutrients will die.
Ha ha ha. Ha ha ha.
It's the white blood cells.
Where are those filthy germs? They're gonna die.
Somebody point me to the abrasion
tunnel. I'll take a look. Oh, that's easy. Thanks. Later.
Thank goodness they made it in time.
So does this mean we're safe now?
We're not out of the woods just yet.
You see how many came swarming in?
Yeah, They got their work cut out for them.
Yes. So those white blood cells seem
to like their work a little too much.
Let's make our move. Yeah. Kill him.
Hey, this.
Immobilize him. I'm on it.
Easy peasy. He's not going anywhere. You
guys had knocked down the others. Of course.
You're pinned down with razor sharp thorns. Just try to move.
Oh. Oh, come on.
That's odd. Why
choose to fight me here? It doesn't make any sense.
They could have easily escaped deeper into
the body. 1146. Do you copy? Yeah.
What's going on? Number 2048 for the dire situation nearby.
Head over and back him up. We'll join the two of you as
soon as we neutralize these germs.
There's something off about this. One.
The germs keep risking their lives to attack us.
She better be careful down there. Roger that.
Was bacteria planning.
Cells at work.
Stay away. How can there be so many of them?
Oh, get to safety now.
Thank you. You saved me. No. You held your own, however.
Well. Well, look at you. I wonder how long you can hold out.
I've got some friends who want to say hello.
Make way for the cavalry. Terrific.
No, the draft.
Nine. Eight. Nine. No. 04989. Keep your l-selectin on.
That's her everywhere. You're flaky. Friends aren't
exactly pulling their weight, are they, now? Huh?
I can't help but pity you.
I mean, you must be getting tired by now.
When you stop to think about it, you neutrophils are pretty pathetic.
Day after day, you suffer just to protect the other cells.
But when you're the ones facing peril,
not a single one of your friends comes to defend you. Huh?
If I heard you right, you called us neutrophils.
Not just white blood cells. Good to know you came prepared.
Are you joking? Of course I have.
Especially after I heard a certain pneumococcus
perished because he failed to case the joint.
She talking about your brother? Yeah.
I've done all the research I possibly could.
Studied up on every last member of the immune system.
For instance, I know that you neutrophil
brutes are always first on the scene
to combat any kind of bacterial invasion.
And I know that the big guns,
the macrophages and monocytes tend to arrive fashionably late,
whereas the lymphocyte brigade doesn't even bother
to show up until the party's almost over.
You get the picture. Basically, all I have
to do is take out your neutrophils right here and now.
I do that and this world will surrender to me.
The.
Now get ready to die.
You blocked that? How do you even have the energy to move?
I see your plan now. It's pretty stupid.
Excuse me. All your planning. And you
forgot the one cell you needed to worry about.
I don't mean macrophage or a monocyte,
not a killer t cell and not even a B.
I'm talking about the strongest cell.
True professionals who can turn the tide
in mere seconds. They're that powerful.
Who are they paying for? All of your hard work.
Huh?
Last play? No. And cooperate. Oh,
and make sure you use your jp1
v so you don't fall out of the wound.
Is this for real? Did everyone say.
Yes, we did. All right, then.
Am I supposed to be scared of these sprites? Stop.
Cover those platelets at all costs.
What do you think you're doing?
Careful not to fall.
Piece of cake. Yeah. Refresh my brain. Ready to go? Great.
Go on. It's. Factors. Got it. Now
attach the fibrin to the coagulation factors like this.
I'll finish.
Keep. Ms.. Staphylococcus. We have a problem.
But complete.
Blood clotting, once activated by a binding
protein referred to as the Von Willebrand factor.
Platelets, aggregate and adhere to one another
in order to close a wound.
Afterwards, proteins in the blood called coagulation factors are activated.
This ultimately forms a fibrin mesh over the entire injury,
thus completing the first stage of sealing a wound.
Now we can finally take him out once and for all. Yeah.
Those little brats plugged up the wound.
But that means I can't go for more backup.
Now that there's no risk of falling. This'll be a breeze.
Get ready to die, Germ.
I guess
it turns out you're the one with the flaky friends after all.
And now they've gone and left you all by your lonesome.
You think I care? I'll defeat you on my own.
Germ exterminated.
During lockdown.
It's real good to see you made it for nine,
eight, nine. Yeah, I guess I did.
Quite so. He's right over.
There you are. Wait, I'm coming down.
Hey, red blood cell. Oh, thank goodness.
I'm so happy you made it.
Yeah, and only with a couple of scratches fitting for an abrasion.
Just ignore that Anyway. So is everyone okay? Oh, yeah.
Everybody's safe and sound and looking to gather together.
But I told them I wanted to come find you first.
Is that right?
So well. I just wanted to say thank you.
Thank you so much. Stop that. You don't need to thank me.
We're all just doing our jobs as best we can.
No, no, no, no, no, no. I am sincerely thanking you.
And you are not stopping me.
All your white blood cells risked your
lives fighting those antigens for us.
And then the platelets pulled their weight by closing up the wound.
You all worked to protect the peace in this blood vessel.
The only thing we red blood cells did was run away.
We were useless. So the least I can do is properly thank you.
Not that there's much I can do other than.
No, that's not true at all. You're not useless.
You saved us today. What I mean
is you're saving us right now, huh?
Hey, are you absolutely sure you're okay? White blood cell.
You haven't moved once. This whole time
that I've been down here, and I.
Hey, what's up? Am I stuck on this? I can't move. Yeah.
Oh. Why are the platelets rounding up
all the red blood cells? Oh.
Whenever a hole opens up in a blood vessel,
it takes a while for the outer wall cells to be restored.
In the meantime, the bodies of blood
cells like us get used to plug that hole.
It's called secondary hemostasis. Yeah. You know,
don't really care what it's called right now.
I just want to know how long
we're going to have to stay trapped like this.
Something like three days, give or take. Thank you.
Please, I need water. I'd be fine with some.
In only a few short days, this clot
will dry up and become a scab.
Keep
Hey, macrophage. What's that you've got there?
Oh, it's a cleaver. A cleaver?
Uh, on the next episode of Cells at Work.
Influenza. All right. Is everyone ready to get to work?