nervous system
• do not exhibit rescue of the morphological defects of the hippocampus that are seen in single Fyn homozygotes, however Schaffer collateral LTP is restored
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• dorsal part of the dentate gyrus granular cell layer is occasionally perturbed
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• caudal part of CA3 pyramidal cell layer is undulated and CA1 pyramidal cells are less tightly packed
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• dendritic regions of pyramidal cells are narrow and length of the apical dendrites is shortened
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• ectopic pyramidal cells are frequently seen
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