mustard gas See sulphur
mustard; nitrogen mustard.
mutarotation Change of optical
activity with time as a result of spontaneous chemical reaction.
myoglobin A globular protein occurring widely in muscle tissue as an
oxygen carrier. It comprises a single
polypeptide chain and a *haem
group, which reversibly binds a molecule of oxygen. This is only relinquished at relatively low external
oxygen concentrations, e.g. during
strenuous exercise when muscle oxygen demand outpaces supply from
the blood. Myoglobin thus acts as an
emergency oxygen store.
myristic acid See tetradecanoic
acid.
mustard gas
364
m
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