also: さいほう
noun
The basic structural and functional unit of living organisms. Used in biological and medical contexts.
人間の体は約37兆個の細胞からできている。
The human body is made up of about 37 trillion cells.
この顕微鏡で細胞の核がはっきり見える。
You can clearly see the cell nucleus with this microscope.
noun
A small group of people working secretly within a larger organization, especially in a communist party or revolutionary movement.
彼は共産党の細胞の一員として活動していた。
He was active as a member of a communist party cell.
組織は小さな細胞に分かれて地下活動を続けた。
The organization split into small cells and continued underground activities.