Plural of cephalin; multiple phospholipid compounds found in brain and nerve tissues.
From Greek 'kephalē' (head) + '-in' (chemical compound suffix) + '-s' (plural marker). This is simply the plural form of cephalin, used when discussing multiple similar brain phospholipids.
Scientists discovered that the brain contains several related cephalin compounds, not just one—by using the plural, researchers could study how these different but similar molecules work together to keep your nervous system functioning!
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