taste/olfaction
• electoolfactogram response magnitudes from olfactory epithelium of null mice in response to isoamyl acetate are 25% lower than in wild-type; responses to all other chemical odors tested are 20-40% smaller than in wild-type
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homeostasis/metabolism
• tyrosine hydroxylase activity in null olfactory bulbs are 65% lower than wild-type
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nervous system
• olfactory bulb weight is 15% less in mutants than in wild-type at 1 to 2 months after birth
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