IPA: /ˈmaɪtəˌdʒɛn/
KK: /ˈmaɪtəˌdʒɛn/
A substance that causes cells to divide and multiply.
The scientist used a mitogen to stimulate cell growth in the laboratory.
Mitogen is formed from "mito-" (from Greek "mitos", meaning thread) and "-gen" (from Greek "genes", meaning born of or produced by). The term refers to substances that stimulate the division of cells, particularly in relation to the threads of chromosomes during cell division.
Think of 'mito-' as referring to the 'threads' of chromosomes and '-gen' meaning 'produced by' — so a mitogen is something that produces cell division by acting on those threads.