Neutrophil moving to the site of infection

This is a video of how a neutrophil (and other cells of the immune system) move to the sight of infection. Notice how they squeeze through the endothelial cells to get into the infected tissue.

Category:

Howto & Style

Tags:

• endothelial
• neutrophil
• immune
• system
• cappalary
• antigen
• pathogen

[19Cadence]

I find cells da cutest thing on earth

[etherealbylar]

"What I see in Nature is a magnificent structure that we can comprehend only very imperfectly, and that must fill a thinking person with a feeling of "humility." This is a genuinely religious feeling that has nothing to do with mysticism". (Albert Einstein)

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[69unforgiven]

@Southpark124 what a douche! firstly, RBC dont "check each other"; they have no nucleus or MHC molecules and only function to carry oxygen. Hence plasmodium parasites (malaria) can live within RBC without being killed. The immune response is only raised when they leave the cell. Signalling to immune cells does not involve the brain either! Cytokines are produced from innate immune cells which recruit even more cells to the site of infection.

[MrJonkelp]

This is a great video

[jakubgt1]

@svski4512

Phagocytosis is never enhanced... it's always the same. It either works or it doesn't. T(h) also never interact with a pathogen aside from its antigens. Anti-gen presenting cells are the ones that engulf the pathogen and present the fragments with MHC class II on its surface for the T(h) lymphocytes. The T(h) cells proliferate and secrete cytokines that activate T(c) cytotoxic lymphocytes, B cells, and macropahges. Our body does more killing with our T(c) cells than phagocytes...

[svski4512]

@jakubgt1

yea that's only partially correct. There is plenty of communication in biological systems outside of the direct neuronal communication. Leukocytes (T helper cells specifically) release cytokines upon encountering pathogens which directly stimulate phagocytes to increase phagocytosis (engulfing the foreign material). That is only one relevant example but nature is full of communication...

[username5531]

there should be an audio of whats going on?...

[wonphi]

19 people wants gangrene.

[Lovingirl80]

OSMOSIS JONES!!!

[NikkiRNified]

It would be nice if i knew that each step is??

[priscillaclassof2000]

Was there supposed to be audio?



[jakubgt1]

@Southpark124

You really need to take some basic biology. Leukocytes are attracted to infections by demonstrating taxis. You also do realize that the nervous system is the only type of tissue that allows transmission of messages right? If erythrocytes were able to send/receive messages we wouldn't be able to get sick.