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The cat-1 (ok411) strain is deficient in the production of cat-1/VMAT protein. A, Primers specific for cat-1 reveal a 400 bp deletion in the cat-1 (ok411) mutant strain. B, The strain cat-1 (ok411) does not produce cat-1/VMAT protein. C, The cat-1(ok411) strain (B) shows no evidence of cat-1/VMAT immunoreactivity (detail of pharyngeal region).
