Xaa

Symbol for unspecified amino acid (also expressed as X).

XAA

Acronym	Definition
XAA➣Xfree86 Acceleration Architecture
XAA➣X Acceleration Architecture
XAA➣Unspecified Amino Acid
XAA➣Xanthenone Acetic Acid (pathology)
XAA➣X Activator Activity (biochemistry)

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