purse

futurity_medicine 00167.txt

One involves the"purse-string"mechanism where a ring of proteins forms at the edge of a wound

and tightens like the strings of a purse. The second is"cell crawling"where cells move across the gap using armlike projections to close the gap.

tech_review 00383.txt

it still very difficult to discern objects like a purse or a stuffed animal. That because there are all sorts of factors to consider

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