ID #1299

Where do phagosomes come from?

There aren't many cell types which have the ability to do this, but for those that can, there will be recognition mechanisms in place to "see" an encountered structure (like a bacterium) as either "self" or "foreign." If it's foreign, the foreign particle gets engulfed by the host cell reaching out extensions of its cytoplasm and bringing the entire structure into the cell inside a membrane. This is called a phagosome.

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