X factor

X factor

Hair replacement A popular term for an unidentified cause of follicular destruction, which occurs in up to 1% of Pts undergoing hair transplantation

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

X factor

A growth factor, identified as hemin, that is needed to grow Haemophilus influenzae in culture.

See: hemin

See also: factor

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