Abstract
The renormalization properties of gauge-invariant composite operators that vanish when the classical equations of motion are used (class ${\mathrm{II}}^{\mathrm{a}}$ operators) and which lead to diagrams where the Adler-Bell-Jackiw anomaly occurs are discussed. It is shown that gauge-invariant operators of this kind do need, in general, nonvanishing gauge-invariant (class I) counterterms.
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