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A rapid E.M. method for detecting channel catfish virus, in vivo.
The rate of growth of catfish farming in the United States during the past 16 years is. unequalled in the history of fish culture. Commercial production of channel catfish (Ictalurus punctatus) has increased from its beginnings in 1960 to an estimated 36,000,000 pounds in 1968, it now exceeds the total production of all other commercially reared fish species in the United States. (Fijan, et. al., 1970) .