lamin


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lam·in

 (lăm′ĭn)
n.
Any of a class of filamentous proteins that form a meshlike layer inside the nuclear membrane of animal cells and have a variety of functions, including providing mechanical support for the nucleus, organizing chromatin, and regulating DNA replication and transcription.

[lam(ina) (in reference to the nuclear lamina, where lamins are found ) + -in.]