Cattle cloning: Part science, part art. No sex please

Sex is an expensive waste of time at the National Dairy Research Institute. None in the herds of virile buffalo and well-hoofed cows, several of whom have close genetic links with prime Dutch and Swiss cattle, have been born of so-called natural service, as the sexual act is quaintly described by stoic scientists. “Natural service is too costly and quite unsuitable...

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