Having an attraction to or affinity for cells; describing substances or organisms that preferentially bind to or associate with cellular material.
From 'cyto-' (cell) + 'philic' (loving), derived from Greek 'philia' (affection/attraction). Used in virology and biochemistry to describe how viruses or molecules interact with cells.
Cytophilic is why certain viruses are so dangerous—they have an almost 'magnetic attraction' to specific cell types, allowing them to precisely target and infect exactly the cells they've evolved to attack.
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