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Kittens reared during the first few months of life in a visual environment composed almost entirely of vertical stripes later exhibit an abnormally low acuity for horizontal gratings. See page 420. [D.W.Muir and D.E.Mitchell,Dalhousic University, Halifax, Nova Scotia, Canada; photograph courtesy of F.Stefani]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)